[Background Sync] Use GcmNetworkManager to start the browser for sync events.

chrome/browser/android/background_sync_launcher_android.h

 // 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.
 
-#ifndef CONTENT_BROWSER_ANDROID_BACKGROUND_SYNC_LAUNCHER_ANDROID_H_
-#define CONTENT_BROWSER_ANDROID_BACKGROUND_SYNC_LAUNCHER_ANDROID_H_
+#ifndef CHROME_BROWSER_ANDROID_BACKGROUND_SYNC_LAUNCHER_ANDROID_H_
+#define CHROME_BROWSER_ANDROID_BACKGROUND_SYNC_LAUNCHER_ANDROID_H_
 
 #include <set>
 
 #include "base/android/jni_android.h"
 #include "base/lazy_instance.h"
 #include "base/macros.h"
-#include "content/common/content_export.h"
 
 namespace content {
 
 class BackgroundSyncManager;

[jkarlin, 2015/10/20 17:45:56]

nit: Add newline 

[iclelland, 2015/10/20 18:56:06]

Done.

+}
 
 // The BackgroundSyncLauncherAndroid singleton owns the Java
 // BackgroundSyncLauncher object and is used to register interest in starting
 // the browser the next time the device goes online. This class runs on the UI
 // thread.
-class CONTENT_EXPORT BackgroundSyncLauncherAndroid {
+class BackgroundSyncLauncherAndroid {
  public:
   static BackgroundSyncLauncherAndroid* Get();
 
   // Register the |registrant|'s interest (or disinterest) in starting the
   // browser the next time the device goes online after the browser has closed.
   // |registrant| is used to count the number of interested objects and is not
   // accessed, therefore it is okay for |registrant| to be deleted before this
   // class. Interest is reset the next time the BackgroundSyncLauncherAndroid is
   // created (browser restart). The caller can remove interest in launching the
   // browser by calling with |launch_when_next_online| set to false.
   static void LaunchBrowserWhenNextOnline(
-      const BackgroundSyncManager* registrant,
+      const content::BackgroundSyncManager* registrant,
       bool launch_when_next_online);
 
   static bool RegisterLauncher(JNIEnv* env);
 
  private:
   friend struct base::DefaultLazyInstanceTraits<BackgroundSyncLauncherAndroid>;
 
   // Constructor and destructor marked private to enforce singleton
   BackgroundSyncLauncherAndroid();
   ~BackgroundSyncLauncherAndroid();
 
-  void LaunchBrowserWhenNextOnlineImpl(const BackgroundSyncManager* registrant,
-                                       bool launch_when_next_online);
+  void LaunchBrowserWhenNextOnlineImpl(
+      const content::BackgroundSyncManager* registrant,
+      bool launch_when_next_online);
 
-  std::set<const BackgroundSyncManager*> launch_when_next_online_registrants_;
+  std::set<const content::BackgroundSyncManager*>
+      launch_when_next_online_registrants_;
   base::android::ScopedJavaGlobalRef<jobject> java_launcher_;
   DISALLOW_COPY_AND_ASSIGN(BackgroundSyncLauncherAndroid);
 };
 
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_ANDROID_BACKGROUND_SYNC_LAUNCHER_ANDROID_H_
+#endif  // CHROME_BROWSER_ANDROID_BACKGROUND_SYNC_LAUNCHER_ANDROID_H_