[Android] Suspend shared timers for hidden renderers

content/child/child_thread_impl.h

 // Copyright (c) 2012 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_CHILD_CHILD_THREAD_IMPL_H_
 #define CONTENT_CHILD_CHILD_THREAD_IMPL_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 173 matching lines @@
     return mojo_application_->service_registry();
   }
 
  protected:
   friend class ChildProcess;
 
   // Called when the process refcount is 0.
   void OnProcessFinalRelease();
 
   virtual bool OnControlMessageReceived(const IPC::Message& msg);
+  virtual void OnProcessBackgrounded(bool backgrounded);
 
   void set_on_channel_error_called(bool on_channel_error_called) {
     on_channel_error_called_ = on_channel_error_called;
   }
 
   // IPC::Listener implementation:
   bool OnMessageReceived(const IPC::Message& msg) override;
   void OnChannelConnected(int32 peer_pid) override;
   void OnChannelError() override;
 
@@ skipping 15 matching lines @@
 
   // We create the channel first without connecting it so we can add filters
   // prior to any messages being received, then connect it afterwards.
   void ConnectChannel(bool use_mojo_channel);
 
   // IPC message handlers.
   void OnShutdown();
   void OnSetProfilerStatus(tracked_objects::ThreadData::Status status);
   void OnGetChildProfilerData(int sequence_number, int current_profiling_phase);
   void OnProfilingPhaseCompleted(int profiling_phase);
-  void OnProcessBackgrounded(bool background);
 #ifdef IPC_MESSAGE_LOG_ENABLED
   void OnSetIPCLoggingEnabled(bool enable);
 #endif
 #if defined(USE_TCMALLOC)
   void OnGetTcmallocStats();
 #endif
 
   void EnsureConnected();
 
   scoped_ptr<MojoApplication> mojo_application_;
@@ skipping 87 matching lines @@
 
  private:
   struct Options options_;
 
   DISALLOW_COPY_AND_ASSIGN(Builder);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_CHILD_THREAD_IMPL_H_