[Android] A prototype of the interactive media notification.

chrome/android/java/src/org/chromium/chrome/browser/DeferredStartupHandler.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;
 
 import android.content.Context;
 import android.os.AsyncTask;
 import android.text.TextUtils;
 
 import org.chromium.base.CommandLine;
 import org.chromium.base.FieldTrialList;
 import org.chromium.base.PowerMonitor;
 import org.chromium.base.SysUtils;
 import org.chromium.base.ThreadUtils;
 import org.chromium.base.TraceEvent;
 import org.chromium.base.VisibleForTesting;
 import org.chromium.chrome.browser.bookmarkswidget.BookmarkThumbnailWidgetProviderBase;
 import org.chromium.chrome.browser.crash.CrashFileManager;
 import org.chromium.chrome.browser.crash.MinidumpUploadService;
 import org.chromium.chrome.browser.download.DownloadManagerService;
 import org.chromium.chrome.browser.media.MediaNotificationService;
+import org.chromium.chrome.browser.media.ui.NotificationMediaPlaybackControls;
 import org.chromium.chrome.browser.partnerbookmarks.PartnerBookmarksShim;
 import org.chromium.chrome.browser.precache.PrecacheLauncher;
 import org.chromium.chrome.browser.preferences.ChromePreferenceManager;
 import org.chromium.chrome.browser.preferences.privacy.PrivacyPreferencesManager;
 import org.chromium.chrome.browser.share.ShareHelper;
 import org.chromium.components.variations.VariationsAssociatedData;
 import org.chromium.content.browser.ChildProcessLauncher;
 
 /**
  * Handler for application level tasks to be completed on deferred startup.
@@ skipping 79 matching lines @@
 
         DownloadManagerService.getDownloadManagerService(application)
                 .clearPendingDownloadNotifications();
 
         application.initializeSharedClasses();
 
         ShareHelper.clearSharedScreenshots(application);
 
         // Clear any media notifications that existed when Chrome was last killed.
         MediaNotificationService.clearMediaNotifications(application);
+        NotificationMediaPlaybackControls.hide(Tab.INVALID_TAB_ID);
 
         startModerateBindingManagementIfNeeded(application);
 
         String customTabsTrialGroupName = FieldTrialList.findFullName("CustomTabs");
         if (customTabsTrialGroupName.equals("Disabled")) {
             ChromePreferenceManager.getInstance(application).setCustomTabsEnabled(false);
         } else if (customTabsTrialGroupName.equals("Enabled")
                 || customTabsTrialGroupName.equals("DisablePrerender")) {
             ChromePreferenceManager.getInstance(application).setCustomTabsEnabled(true);
         }
@@ skipping 39 matching lines @@
     }
 
     /**
     * @return Whether deferred startup has been completed.
     */
     @VisibleForTesting
     public boolean isDeferredStartupComplete() {
         return mDeferredStartupComplete;
     }
 }