Update Dialer source to latest internal Google revision.

Previously, Android's Dialer app was developed in an internal Google
source control system and only exported to public during AOSP drops.

The Dialer team is now switching to a public development model similar
to the telephony team.

This CL represents all internal Google changes that were committed to
Dialer between the public O release and today's tip of tree on internal
master. This CL squashes those changes into a single commit.
In subsequent changes, changes will be exported on a per-commit basis.

Test: make, flash install, run
Merged-In: I45270eaa8ce732d71a1bd84b08c7fa0e99af3160
Change-Id: I529aaeb88535b9533c0ae4ef4e6c1222d4e0f1c8
PiperOrigin-RevId: 167068436

5 files changed, 247 insertions, 24 deletions

diff --git a/java/com/android/incallui/call/CallList.java b/java/com/android/incallui/call/CallList.java
index 34f0cc0d7..d0931dd3d 100644
--- a/java/com/android/incallui/call/CallList.java
+++ b/java/com/android/incallui/call/CallList.java
@@ -32,6 +32,8 @@ import com.android.dialer.blocking.FilteredNumberAsyncQueryHandler;
 import com.android.dialer.blocking.FilteredNumbersUtil;
 import com.android.dialer.common.Assert;
 import com.android.dialer.common.LogUtil;
+import com.android.dialer.enrichedcall.EnrichedCallComponent;
+import com.android.dialer.enrichedcall.EnrichedCallManager;
 import com.android.dialer.location.GeoUtil;
 import com.android.dialer.logging.DialerImpression;
 import com.android.dialer.logging.Logger;
@@ -112,11 +114,16 @@ public class CallList implements DialerCallDelegate {
 
   public void onCallAdded(
       final Context context, final android.telecom.Call telecomCall, LatencyReport latencyReport) {
-    Trace.beginSection("onCallAdded");
+    Trace.beginSection("CallList.onCallAdded");
     final DialerCall call =
         new DialerCall(context, this, telecomCall, latencyReport, true /* registerCallback */);
     logSecondIncomingCall(context, call);
 
+    EnrichedCallManager manager = EnrichedCallComponent.get(context).getEnrichedCallManager();
+    manager.registerCapabilitiesListener(call);
+    manager.registerStateChangedListener(call);
+
+    Trace.beginSection("checkSpam");
     final DialerCallListenerImpl dialerCallListener = new DialerCallListenerImpl(call);
     call.addListener(dialerCallListener);
     LogUtil.d("CallList.onCallAdded", "callState=" + call.getState());
@@ -163,7 +170,9 @@ public class CallList implements DialerCallDelegate {
 
       updateUserMarkedSpamStatus(call, context, number, dialerCallListener);
     }
+    Trace.endSection();
 
+    Trace.beginSection("checkBlock");
     FilteredNumberAsyncQueryHandler filteredNumberAsyncQueryHandler =
         new FilteredNumberAsyncQueryHandler(context);
 
@@ -179,6 +188,7 @@ public class CallList implements DialerCallDelegate {
         },
         call.getNumber(),
         GeoUtil.getCurrentCountryIso(context));
+    Trace.endSection();
 
     if (call.getState() == DialerCall.State.INCOMING
         || call.getState() == DialerCall.State.CALL_WAITING) {
@@ -278,6 +288,10 @@ public class CallList implements DialerCallDelegate {
       DialerCall call = mCallByTelecomCall.get(telecomCall);
       Assert.checkArgument(!call.isExternalCall());
 
+      EnrichedCallManager manager = EnrichedCallComponent.get(context).getEnrichedCallManager();
+      manager.unregisterCapabilitiesListener(call);
+      manager.unregisterStateChangedListener(call);
+
       // Don't log an already logged call. logCall() might be called multiple times
       // for the same call due to b/24109437.
       if (call.getLogState() != null && !call.getLogState().isLogged) {
@@ -289,6 +303,8 @@ public class CallList implements DialerCallDelegate {
         LogUtil.w(
             "CallList.onCallRemoved", "Removing call not previously disconnected " + call.getId());
       }
+
+      call.onRemovedFromCallList();
     }
 
     if (!hasLiveCall()) {
@@ -341,6 +357,7 @@ public class CallList implements DialerCallDelegate {
 
   /** Called when a single call has changed. */
   private void onIncoming(DialerCall call) {
+    Trace.beginSection("CallList.onIncoming");
     if (updateCallInMap(call)) {
       LogUtil.i("CallList.onIncoming", String.valueOf(call));
     }
@@ -348,6 +365,7 @@ public class CallList implements DialerCallDelegate {
     for (Listener listener : mListeners) {
       listener.onIncomingCall(call);
     }
+    Trace.endSection();
   }
 
   public void addListener(@NonNull Listener listener) {
@@ -518,6 +536,22 @@ public class CallList implements DialerCallDelegate {
   }
 
   /**
+   * Return if there is any active or background call which was not a parent call (never had a child
+   * call)
+   */
+  public boolean hasNonParentActiveOrBackgroundCall() {
+    for (DialerCall call : mCallById.values()) {
+      if ((call.getState() == State.ACTIVE
+              || call.getState() == State.ONHOLD
+              || call.getState() == State.CONFERENCED)
+          && !call.wasParentCall()) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  /**
    * This is called when the service disconnects, either expectedly or unexpectedly. For the
    * expected case, it's because we have no calls left. For the unexpected case, it is likely a
    * crash of phone and we need to clean up our calls manually. Without phone, there can be no
@@ -556,7 +590,9 @@ public class CallList implements DialerCallDelegate {
    *
    * @param call The call to update.
    */
-  private void onUpdateCall(DialerCall call) {
+  @VisibleForTesting
+  void onUpdateCall(DialerCall call) {
+    Trace.beginSection("CallList.onUpdateCall");
     LogUtil.d("CallList.onUpdateCall", String.valueOf(call));
     if (!mCallById.containsKey(call.getId()) && call.isExternalCall()) {
       // When a regular call becomes external, it is removed from the call list, and there may be
@@ -569,6 +605,7 @@ public class CallList implements DialerCallDelegate {
     if (updateCallInMap(call)) {
       LogUtil.i("CallList.onUpdateCall", String.valueOf(call));
     }
+    Trace.endSection();
   }
 
   /**
@@ -593,6 +630,7 @@ public class CallList implements DialerCallDelegate {
    * @return false if no call previously existed and no call was added, otherwise true.
    */
   private boolean updateCallInMap(DialerCall call) {
+    Trace.beginSection("CallList.updateCallInMap");
     Objects.requireNonNull(call);
 
     boolean updated = false;
@@ -622,6 +660,7 @@ public class CallList implements DialerCallDelegate {
       updated = true;
     }
 
+    Trace.endSection();
     return updated;
   }
 
@@ -751,7 +790,7 @@ public class CallList implements DialerCallDelegate {
 
     @Override
     public void onDialerCallUpdate() {
-      Trace.beginSection("onUpdate");
+      Trace.beginSection("CallList.onDialerCallUpdate");
       onUpdateCall(mCall);
       notifyGenericListeners();
       Trace.endSection();
@@ -793,6 +832,9 @@ public class CallList implements DialerCallDelegate {
     }
 
     @Override
+    public void onEnrichedCallSessionUpdate() {}
+
+    @Override
     public void onDialerCallSessionModificationStateChange() {
       for (Listener listener : mListeners) {
         listener.onSessionModificationStateChange(mCall);
diff --git a/java/com/android/incallui/call/DialerCall.java b/java/com/android/incallui/call/DialerCall.java
index acedf41f1..1a998096a 100644
--- a/java/com/android/incallui/call/DialerCall.java
+++ b/java/com/android/incallui/call/DialerCall.java
@@ -41,16 +41,20 @@ import android.telecom.VideoProfile;
 import android.telephony.PhoneNumberUtils;
 import android.text.TextUtils;
 import com.android.contacts.common.compat.CallCompat;
-import com.android.contacts.common.compat.TelephonyManagerCompat;
 import com.android.contacts.common.compat.telecom.TelecomManagerCompat;
 import com.android.dialer.callintent.CallInitiationType;
 import com.android.dialer.callintent.CallIntentParser;
 import com.android.dialer.callintent.CallSpecificAppData;
 import com.android.dialer.common.Assert;
-import com.android.dialer.common.ConfigProviderBindings;
 import com.android.dialer.common.LogUtil;
+import com.android.dialer.compat.telephony.TelephonyManagerCompat;
+import com.android.dialer.configprovider.ConfigProviderBindings;
 import com.android.dialer.enrichedcall.EnrichedCallCapabilities;
 import com.android.dialer.enrichedcall.EnrichedCallComponent;
+import com.android.dialer.enrichedcall.EnrichedCallManager;
+import com.android.dialer.enrichedcall.EnrichedCallManager.CapabilitiesListener;
+import com.android.dialer.enrichedcall.EnrichedCallManager.Filter;
+import com.android.dialer.enrichedcall.EnrichedCallManager.StateChangedListener;
 import com.android.dialer.enrichedcall.Session;
 import com.android.dialer.lightbringer.LightbringerComponent;
 import com.android.dialer.logging.ContactLookupResult;
@@ -77,7 +81,7 @@ import java.util.concurrent.CopyOnWriteArrayList;
 import java.util.concurrent.TimeUnit;
 
 /** Describes a single call and its state. */
-public class DialerCall implements VideoTechListener {
+public class DialerCall implements VideoTechListener, StateChangedListener, CapabilitiesListener {
 
   public static final int CALL_HISTORY_STATUS_UNKNOWN = 0;
   public static final int CALL_HISTORY_STATUS_PRESENT = 1;
@@ -143,6 +147,13 @@ public class DialerCall implements VideoTechListener {
   private EnrichedCallCapabilities mEnrichedCallCapabilities;
   private Session mEnrichedCallSession;
 
+  private int answerAndReleaseButtonDisplayedTimes = 0;
+  private boolean releasedByAnsweringSecondCall = false;
+  // Times when a second call is received but AnswerAndRelease button is not shown
+  // since it's not supported.
+  private int secondCallWithoutAnswerAndReleasedButtonTimes = 0;
+  private VideoTech videoTech;
+
   public static String getNumberFromHandle(Uri handle) {
     return handle == null ? "" : handle.getSchemeSpecificPart();
   }
@@ -153,6 +164,9 @@ public class DialerCall implements VideoTechListener {
    */
   private boolean isRemotelyHeld;
 
+  /** Indicates whether this call is currently in the process of being merged into a conference. */
+  private boolean isMergeInProcess;
+
   /**
    * Indicates whether the phone account associated with this call supports specifying a call
    * subject.
@@ -181,14 +195,15 @@ public class DialerCall implements VideoTechListener {
 
         @Override
         public void onDetailsChanged(Call call, Call.Details details) {
-          LogUtil.v("TelecomCallCallback.onStateChanged", " call=" + call + " details=" + details);
+          LogUtil.v(
+              "TelecomCallCallback.onDetailsChanged", " call=" + call + " details=" + details);
           update();
         }
 
         @Override
         public void onCannedTextResponsesLoaded(Call call, List<String> cannedTextResponses) {
           LogUtil.v(
-              "TelecomCallCallback.onStateChanged",
+              "TelecomCallCallback.onCannedTextResponsesLoaded",
               "call=" + call + " cannedTextResponses=" + cannedTextResponses);
           for (CannedTextResponsesLoadedListener listener : mCannedTextResponsesLoadedListeners) {
             listener.onCannedTextResponsesLoaded(DialerCall.this);
@@ -198,7 +213,7 @@ public class DialerCall implements VideoTechListener {
         @Override
         public void onPostDialWait(Call call, String remainingPostDialSequence) {
           LogUtil.v(
-              "TelecomCallCallback.onStateChanged",
+              "TelecomCallCallback.onPostDialWait",
               "call=" + call + " remainingPostDialSequence=" + remainingPostDialSequence);
           update();
         }
@@ -206,20 +221,20 @@ public class DialerCall implements VideoTechListener {
         @Override
         public void onVideoCallChanged(Call call, VideoCall videoCall) {
           LogUtil.v(
-              "TelecomCallCallback.onStateChanged", "call=" + call + " videoCall=" + videoCall);
+              "TelecomCallCallback.onVideoCallChanged", "call=" + call + " videoCall=" + videoCall);
           update();
         }
 
         @Override
         public void onCallDestroyed(Call call) {
-          LogUtil.v("TelecomCallCallback.onStateChanged", "call=" + call);
+          LogUtil.v("TelecomCallCallback.onCallDestroyed", "call=" + call);
           unregisterCallback();
         }
 
         @Override
         public void onConferenceableCallsChanged(Call call, List<Call> conferenceableCalls) {
           LogUtil.v(
-              "DialerCall.onConferenceableCallsChanged",
+              "TelecomCallCallback.onConferenceableCallsChanged",
               "call %s, conferenceable calls: %d",
               call,
               conferenceableCalls.size());
@@ -229,7 +244,7 @@ public class DialerCall implements VideoTechListener {
         @Override
         public void onConnectionEvent(android.telecom.Call call, String event, Bundle extras) {
           LogUtil.v(
-              "DialerCall.onConnectionEvent",
+              "TelecomCallCallback.onConnectionEvent",
               "Call: " + call + ", Event: " + event + ", Extras: " + extras);
           switch (event) {
               // The Previous attempt to Merge two calls together has failed in Telecom. We must
@@ -255,6 +270,14 @@ public class DialerCall implements VideoTechListener {
             case TelephonyManagerCompat.EVENT_NOTIFY_INTERNATIONAL_CALL_ON_WFC:
               notifyInternationalCallOnWifi();
               break;
+            case TelephonyManagerCompat.EVENT_MERGE_START:
+              LogUtil.i("DialerCall.onConnectionEvent", "merge start");
+              isMergeInProcess = true;
+              break;
+            case TelephonyManagerCompat.EVENT_MERGE_COMPLETE:
+              LogUtil.i("DialerCall.onConnectionEvent", "merge complete");
+              isMergeInProcess = false;
+              break;
             default:
               break;
           }
@@ -292,6 +315,8 @@ public class DialerCall implements VideoTechListener {
 
     mTimeAddedMs = System.currentTimeMillis();
     parseCallSpecificAppData();
+
+    updateEnrichedCallSession();
   }
 
   private static int translateState(int state) {
@@ -404,15 +429,27 @@ public class DialerCall implements VideoTechListener {
     }
   }
 
+  public boolean wasParentCall() {
+    return mLogState.conferencedCalls != 0;
+  }
+
   private void update() {
-    Trace.beginSection("Update");
+    Trace.beginSection("DialerCall.update");
     int oldState = getState();
+    // Clear any cache here that could potentially change on update.
+    videoTech = null;
     // We want to potentially register a video call callback here.
     updateFromTelecomCall();
     if (oldState != getState() && getState() == DialerCall.State.DISCONNECTED) {
       for (DialerCallListener listener : mListeners) {
         listener.onDialerCallDisconnect();
       }
+      EnrichedCallComponent.get(mContext)
+          .getEnrichedCallManager()
+          .unregisterCapabilitiesListener(this);
+      EnrichedCallComponent.get(mContext)
+          .getEnrichedCallManager()
+          .unregisterStateChangedListener(this);
     } else {
       for (DialerCallListener listener : mListeners) {
         listener.onDialerCallUpdate();
@@ -422,6 +459,7 @@ public class DialerCall implements VideoTechListener {
   }
 
   private void updateFromTelecomCall() {
+    Trace.beginSection("DialerCall.updateFromTelecomCall");
     LogUtil.v("DialerCall.updateFromTelecomCall", mTelecomCall.toString());
 
     mVideoTechManager.dispatchCallStateChanged(mTelecomCall.getState());
@@ -470,6 +508,7 @@ public class DialerCall implements VideoTechListener {
         }
       }
     }
+    Trace.endSection();
   }
 
   /**
@@ -647,13 +686,23 @@ public class DialerCall implements VideoTechListener {
   }
 
   public void setState(int state) {
-    mState = state;
-    if (mState == State.INCOMING) {
+    if (state == State.INCOMING) {
       mLogState.isIncoming = true;
-    } else if (mState == State.DISCONNECTED) {
-      mLogState.duration =
+    } else if (state == State.DISCONNECTED) {
+      long newDuration =
           getConnectTimeMillis() == 0 ? 0 : System.currentTimeMillis() - getConnectTimeMillis();
+      if (mState != state) {
+        mLogState.duration = newDuration;
+      } else {
+        LogUtil.i(
+            "DialerCall.setState",
+            "ignoring state transition from DISCONNECTED to DISCONNECTED."
+                + " Duration would have changed from %s to %s",
+            mLogState.duration,
+            newDuration);
+      }
     }
+    mState = state;
   }
 
   public int getNumberPresentation() {
@@ -952,14 +1001,49 @@ public class DialerCall implements VideoTechListener {
     return isRemotelyHeld;
   }
 
+  public boolean isMergeInProcess() {
+    return isMergeInProcess;
+  }
+
   public boolean isIncoming() {
     return mLogState.isIncoming;
   }
 
+  public boolean isAssistedDialed() {
+    if (getIntentExtras() != null) {
+      return getIntentExtras().getBoolean(TelephonyManagerCompat.IS_ASSISTED_DIALED, false);
+    }
+    return false;
+  }
+
   public LatencyReport getLatencyReport() {
     return mLatencyReport;
   }
 
+  public int getAnswerAndReleaseButtonDisplayedTimes() {
+    return answerAndReleaseButtonDisplayedTimes;
+  }
+
+  public void increaseAnswerAndReleaseButtonDisplayedTimes() {
+    answerAndReleaseButtonDisplayedTimes++;
+  }
+
+  public boolean getReleasedByAnsweringSecondCall() {
+    return releasedByAnsweringSecondCall;
+  }
+
+  public void setReleasedByAnsweringSecondCall(boolean releasedByAnsweringSecondCall) {
+    this.releasedByAnsweringSecondCall = releasedByAnsweringSecondCall;
+  }
+
+  public int getSecondCallWithoutAnswerAndReleasedButtonTimes() {
+    return secondCallWithoutAnswerAndReleasedButtonTimes;
+  }
+
+  public void increaseSecondCallWithoutAnswerAndReleasedButtonTimes() {
+    secondCallWithoutAnswerAndReleasedButtonTimes++;
+  }
+
   @Nullable
   public EnrichedCallCapabilities getEnrichedCallCapabilities() {
     return mEnrichedCallCapabilities;
@@ -1057,7 +1141,10 @@ public class DialerCall implements VideoTechListener {
   }
 
   public VideoTech getVideoTech() {
-    return mVideoTechManager.getVideoTech();
+    if (videoTech == null) {
+      videoTech = mVideoTechManager.getVideoTech();
+    }
+    return videoTech;
   }
 
   public String getCallbackNumber() {
@@ -1172,6 +1259,76 @@ public class DialerCall implements VideoTechListener {
     TelecomAdapter.getInstance().setAudioRoute(CallAudioState.ROUTE_SPEAKER);
   }
 
+  @Override
+  public void onCapabilitiesUpdated() {
+    if (getNumber() == null) {
+      return;
+    }
+    EnrichedCallCapabilities capabilities =
+        EnrichedCallComponent.get(mContext).getEnrichedCallManager().getCapabilities(getNumber());
+    if (capabilities != null) {
+      setEnrichedCallCapabilities(capabilities);
+      update();
+    }
+  }
+
+  @Override
+  public void onEnrichedCallStateChanged() {
+    updateEnrichedCallSession();
+  }
+
+  @Override
+  public void onImpressionLoggingNeeded(DialerImpression.Type impressionType) {
+    Logger.get(mContext).logCallImpression(impressionType, getUniqueCallId(), getTimeAddedMs());
+  }
+
+  private void updateEnrichedCallSession() {
+    if (getNumber() == null) {
+      return;
+    }
+    if (getEnrichedCallSession() != null) {
+      // State changes to existing sessions are currently handled by the UI components (which have
+      // their own listeners). Someday instead we could remove those and just call update() here and
+      // have the usual onDialerCallUpdate update the UI.
+      dispatchOnEnrichedCallSessionUpdate();
+      return;
+    }
+
+    EnrichedCallManager manager = EnrichedCallComponent.get(mContext).getEnrichedCallManager();
+
+    Filter filter =
+        isIncoming()
+            ? manager.createIncomingCallComposerFilter()
+            : manager.createOutgoingCallComposerFilter();
+
+    Session session = manager.getSession(getUniqueCallId(), getNumber(), filter);
+    if (session == null) {
+      return;
+    }
+
+    session.setUniqueDialerCallId(getUniqueCallId());
+    setEnrichedCallSession(session);
+
+    LogUtil.i(
+        "DialerCall.updateEnrichedCallSession",
+        "setting session %d's dialer id to %s",
+        session.getSessionId(),
+        getUniqueCallId());
+
+    dispatchOnEnrichedCallSessionUpdate();
+  }
+
+  private void dispatchOnEnrichedCallSessionUpdate() {
+    for (DialerCallListener listener : mListeners) {
+      listener.onEnrichedCallSessionUpdate();
+    }
+  }
+
+  void onRemovedFromCallList() {
+    // Ensure we clean up when this call is removed.
+    mVideoTechManager.dispatchRemovedFromCallList();
+  }
+
   /**
    * Specifies whether a number is in the call history or not. {@link #CALL_HISTORY_STATUS_UNKNOWN}
    * means there is no result.
@@ -1203,6 +1360,7 @@ public class DialerCall implements VideoTechListener {
     public static final int CONNECTING = 13; /* Waiting for Telecom broadcast to finish */
     public static final int BLOCKED = 14; /* The number was found on the block list */
     public static final int PULLING = 15; /* An external call being pulled to the device */
+    public static final int CALL_PENDING = 16; /* A call is pending on a long process to finish */
 
     public static boolean isConnectingOrConnected(int state) {
       switch (state) {
@@ -1372,6 +1530,7 @@ public class DialerCall implements VideoTechListener {
 
       String phoneNumber = call.getNumber();
       phoneNumber = phoneNumber != null ? phoneNumber : "";
+      phoneNumber = phoneNumber.replaceAll("[^+0-9]", "");
 
       // Insert order here determines the priority of that video tech option
       videoTechs = new ArrayList<>();
@@ -1390,7 +1549,10 @@ public class DialerCall implements VideoTechListener {
 
       videoTechs.add(
           new LightbringerTech(
-              LightbringerComponent.get(call.mContext).getLightbringer(), call, phoneNumber));
+              LightbringerComponent.get(call.mContext).getLightbringer(),
+              call,
+              call.mTelecomCall,
+              phoneNumber));
     }
 
     VideoTech getVideoTech() {
@@ -1402,6 +1564,7 @@ public class DialerCall implements VideoTechListener {
         if (tech.isAvailable(context)) {
           // Remember the first VideoTech that becomes available and always use it
           savedTech = tech;
+          savedTech.becomePrimary();
           return savedTech;
         }
       }
@@ -1414,6 +1577,12 @@ public class DialerCall implements VideoTechListener {
         videoTech.onCallStateChanged(context, newState);
       }
     }
+
+    void dispatchRemovedFromCallList() {
+      for (VideoTech videoTech : videoTechs) {
+        videoTech.onRemovedFromCallList();
+      }
+    }
   }
 
   /** Called when canned text responses have been loaded. */
diff --git a/java/com/android/incallui/call/DialerCallListener.java b/java/com/android/incallui/call/DialerCallListener.java
index ed321be05..5d24a4d4b 100644
--- a/java/com/android/incallui/call/DialerCallListener.java
+++ b/java/com/android/incallui/call/DialerCallListener.java
@@ -36,4 +36,6 @@ public interface DialerCallListener {
   void onHandoverToWifiFailure();
 
   void onInternationalCallOnWifi();
+
+  void onEnrichedCallSessionUpdate();
 }
diff --git a/java/com/android/incallui/call/ExternalCallList.java b/java/com/android/incallui/call/ExternalCallList.java
index 52a7a304b..f104dfe9f 100644
--- a/java/com/android/incallui/call/ExternalCallList.java
+++ b/java/com/android/incallui/call/ExternalCallList.java
@@ -22,6 +22,7 @@ import android.support.annotation.NonNull;
 import android.telecom.Call;
 import android.util.ArraySet;
 import com.android.contacts.common.compat.CallCompat;
+import com.android.dialer.common.Assert;
 import com.android.dialer.common.LogUtil;
 import java.util.Collections;
 import java.util.Set;
@@ -48,9 +49,8 @@ public class ExternalCallList {
 
   /** Begins tracking an external call and notifies listeners of the new call. */
   public void onCallAdded(Call telecomCall) {
-    if (!telecomCall.getDetails().hasProperty(CallCompat.Details.PROPERTY_IS_EXTERNAL_CALL)) {
-      throw new IllegalArgumentException();
-    }
+    Assert.checkArgument(
+        telecomCall.getDetails().hasProperty(CallCompat.Details.PROPERTY_IS_EXTERNAL_CALL));
     mExternalCalls.add(telecomCall);
     telecomCall.registerCallback(mTelecomCallCallback, new Handler(Looper.getMainLooper()));
     notifyExternalCallAdded(telecomCall);
diff --git a/java/com/android/incallui/call/TelecomAdapter.java b/java/com/android/incallui/call/TelecomAdapter.java
index ebf4ecf4f..005278bff 100644
--- a/java/com/android/incallui/call/TelecomAdapter.java
+++ b/java/com/android/incallui/call/TelecomAdapter.java
@@ -20,12 +20,13 @@ import android.content.ActivityNotFoundException;
 import android.content.Intent;
 import android.os.Looper;
 import android.support.annotation.MainThread;
+import android.support.annotation.VisibleForTesting;
 import android.telecom.InCallService;
 import com.android.dialer.common.LogUtil;
 import java.util.List;
 
 /** Wrapper around Telecom APIs. */
-public final class TelecomAdapter implements InCallServiceListener {
+public class TelecomAdapter implements InCallServiceListener {
 
   private static final String ADD_CALL_MODE_KEY = "add_call_mode";
 
@@ -45,6 +46,11 @@ public final class TelecomAdapter implements InCallServiceListener {
     return sInstance;
   }
 
+  @VisibleForTesting(otherwise = VisibleForTesting.NONE)
+  public static void setInstanceForTesting(TelecomAdapter telecomAdapter) {
+    sInstance = telecomAdapter;
+  }
+
   @Override
   public void setInCallService(InCallService inCallService) {
     mInCallService = inCallService;
@@ -82,9 +88,13 @@ public final class TelecomAdapter implements InCallServiceListener {
       List<android.telecom.Call> conferenceable = call.getConferenceableCalls();
       if (!conferenceable.isEmpty()) {
         call.conference(conferenceable.get(0));
+        // It's safe to clear restrict count for merge action.
+        DialerCall.clearRestrictedCount();
       } else {
         if (call.getDetails().can(android.telecom.Call.Details.CAPABILITY_MERGE_CONFERENCE)) {
           call.mergeConference();
+          // It's safe to clear restrict count for merge action.
+          DialerCall.clearRestrictedCount();
         }
       }
     } else {