Merge java_staging/src into java/src.

chrome/android/java/src/org/chromium/chrome/browser/document/TabDelegateImpl.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.document;
 
 import android.app.Activity;
 import android.text.TextUtils;
 
 import org.chromium.chrome.browser.ChromeMobileApplication;
@@ skipping 136 matching lines @@
         ChromeLauncherActivity.launchDocumentInstance(getActivityFromTab(parent), mIsIncognito,
                 documentLaunchMode, loadUrlParams.getUrl(), documentStartedBy,
                 loadUrlParams.getTransitionType(), params);
     }
 
     private Activity getActivityFromTab(Tab tab) {
         return tab == null || tab.getWindowAndroid() == null
                 ? null : tab.getWindowAndroid().getActivity().get();
     }
 }