[Custom Tabs]Add API for updating action button in service

chrome/android/javatests/src/org/chromium/chrome/browser/customtabs/CustomTabActivityTest.java

 // 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.customtabs;
 
 import android.app.Application;
 import android.app.Instrumentation;
 import android.app.PendingIntent;
 import android.content.BroadcastReceiver;
@@ skipping 362 matching lines @@
         assertTrue("A custom tab toolbar is never shown", toolbarView instanceof CustomTabToolbar);
         CustomTabToolbar toolbar = (CustomTabToolbar) toolbarView;
         final ImageButton actionButton = toolbar.getCustomActionButtonForTest();
 
         assertNotNull(actionButton);
         assertTrue("Action button should not be shown",
                 View.VISIBLE != actionButton.getVisibility());
 
         CustomTabIntentDataProvider dataProvider = mActivity.getIntentDataProvider();
         assertNull(dataProvider.getActionButtonIcon());
-        assertNull(dataProvider.getActionButtonPendingIntentForTest());
+        assertNull(dataProvider.getActionButtonPendingIntent());
     }
 
     @SmallTest
     public void testLaunchWithSession() throws InterruptedException {
         IBinder session = warmUpAndLaunchUrlWithSession();
         assertEquals(mActivity.getIntentDataProvider().getSession(), session);
     }
 
     @SmallTest
     public void testLoadNewUrlWithSession() throws InterruptedException {
@@ skipping 148 matching lines @@
         @Override
         public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode,
                 String resultData, Bundle resultExtras) {
             if (pendingIntent.equals(mPi)) {
                 mUri = intent.getDataString();
                 mIsSent.set(true);
             }
         }
     }
 }