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diff --git a/java/com/android/dialer/common/FallibleAsyncTask.java b/java/com/android/dialer/common/FallibleAsyncTask.java
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+++ b/java/com/android/dialer/common/FallibleAsyncTask.java
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+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License
+ */
+
+package com.android.dialer.common;
+
+import android.os.AsyncTask;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import com.android.dialer.common.FallibleAsyncTask.FallibleTaskResult;
+
+
+/**
+ * A task that runs work in the background, passing Throwables from {@link
+ * #doInBackground(Object[])} to {@link #onPostExecute(Object)} through a {@link
+ * FallibleTaskResult}.
+ *
+ * @param <ParamsT> the type of the parameters sent to the task upon execution
+ * @param <ProgressT> the type of the progress units published during the background computation
+ * @param <ResultT> the type of the result of the background computation
+ */
+public abstract class FallibleAsyncTask<ParamsT, ProgressT, ResultT>
+    extends AsyncTask<ParamsT, ProgressT, FallibleTaskResult<ResultT>> {
+
+  @Override
+  protected final FallibleTaskResult<ResultT> doInBackground(ParamsT... params) {
+    try {
+      return FallibleTaskResult.createSuccessResult(doInBackgroundFallible(params));
+    } catch (Throwable t) {
+      return FallibleTaskResult.createFailureResult(t);
+    }
+  }
+
+  /** Performs background work that may result in a Throwable. */
+  @Nullable
+  protected abstract ResultT doInBackgroundFallible(ParamsT... params) throws Throwable;
+
+  /**
+   * Holds the result of processing from {@link #doInBackground(Object[])}.
+   *
+   * @param <ResultT> the type of the result of the background computation
+   */
+
+  protected abstract static class FallibleTaskResult<ResultT> {
+
+    /** Creates an instance of FallibleTaskResult for the given throwable. */
+    private static <ResultT> FallibleTaskResult<ResultT> createFailureResult(@NonNull Throwable t) {
+      return new AutoValue_FallibleAsyncTask_FallibleTaskResult<>(t, null);
+    }
+
+    /** Creates an instance of FallibleTaskResult for the given result. */
+    private static <ResultT> FallibleTaskResult<ResultT> createSuccessResult(
+        @Nullable ResultT result) {
+      return new AutoValue_FallibleAsyncTask_FallibleTaskResult<>(null, result);
+    }
+
+    /**
+     * Returns the Throwable thrown in {@link #doInBackground(Object[])}, or {@code null} if
+     * background work completed without throwing.
+     */
+    @Nullable
+    public abstract Throwable getThrowable();
+
+    /**
+     * Returns the result of {@link #doInBackground(Object[])}, which may be {@code null}, or {@code
+     * null} if the background work threw a Throwable.
+     *
+     * <p>Use {@link #isFailure()} to determine if a {@code null} return is the result of a
+     * Throwable from the background work.
+     */
+    @Nullable
+    public abstract ResultT getResult();
+
+    /**
+     * Returns {@code true} if this object is the result of background work that threw a Throwable.
+     */
+    public boolean isFailure() {
+      //noinspection ThrowableResultOfMethodCallIgnored
+      return getThrowable() != null;
+    }
+  }
+}