Upstream oodles of Chrome for Android code into Chromium.

chrome/android/java_staging/src/org/chromium/chrome/browser/gcore/GoogleApiClientConnectionHelper.java

Index: chrome/android/java_staging/src/org/chromium/chrome/browser/gcore/GoogleApiClientConnectionHelper.java
diff --git a/chrome/android/java_staging/src/org/chromium/chrome/browser/gcore/GoogleApiClientConnectionHelper.java b/chrome/android/java_staging/src/org/chromium/chrome/browser/gcore/GoogleApiClientConnectionHelper.java
new file mode 100644
index 0000000000000000000000000000000000000000..03371ccfbf9682e4973f443012488c84b4472ea2
--- /dev/null
+++ b/chrome/android/java_staging/src/org/chromium/chrome/browser/gcore/GoogleApiClientConnectionHelper.java
@@ -0,0 +1,54 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser.gcore;
+
+import android.os.Bundle;
+import android.os.Handler;
+
+import com.google.android.gms.common.ConnectionResult;
+import com.google.android.gms.common.api.GoogleApiClient;
+import com.google.android.gms.common.api.GoogleApiClient.ConnectionCallbacks;
+import com.google.android.gms.common.api.GoogleApiClient.OnConnectionFailedListener;
+
+/**
+ * Helper that allows to manage connection failures when using {@link GoogleApiClient}.
+ *
+ * When the connection fails, it will try to reconnect {@link ConnectedTask#RETRY_NUMBER_LIMIT}
+ * times in the background, waiting {@link ConnectedTask#CONNECTION_RETRY_TIME_MS} milliseconds
+ * between each attempt.
+ */
+public class GoogleApiClientConnectionHelper
+        implements OnConnectionFailedListener, ConnectionCallbacks {
+    private int mResolutionAttempts = 0;
+    private Handler mHandler;
+    private final GoogleApiClient mClient;
+
+    public GoogleApiClientConnectionHelper(GoogleApiClient client) {
+        mClient = client;
+        mClient.registerConnectionCallbacks(this);
+        mClient.registerConnectionFailedListener(this);
+    }
+
+    @Override
+    public void onConnectionFailed(ConnectionResult result) {
+        if (mResolutionAttempts++ < ConnectedTask.RETRY_NUMBER_LIMIT) {
+            if (mHandler == null) mHandler = new Handler();
+            mHandler.postDelayed(new Runnable() {
+                @Override
+                public void run() {
+                    mClient.connect();
+                }
+            }, ConnectedTask.CONNECTION_RETRY_TIME_MS);
+        }
+    }
+
+    @Override
+    public void onConnected(Bundle connectionHint) {
+        mResolutionAttempts = 0;
+    }
+
+    @Override
+    public void onConnectionSuspended(int cause) {}
+}