MemoryPressure: sends the signal to the renderer.

content/app/android/child_process_service.cc

 // 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.
 
 #include "content/app/android/child_process_service.h"
 
 #include <android/native_window_jni.h>
 #include <cpu-features.h>
 
 #include "base/android/jni_array.h"
+#include "base/android/memory_pressure_listener_android.h"
 #include "base/logging.h"
 #include "base/posix/global_descriptors.h"
 #include "content/child/child_process.h"
 #include "content/child/child_thread.h"
 #include "content/common/android/surface_texture_peer.h"
 #include "content/common/gpu/gpu_surface_lookup.h"
 #include "content/public/app/android_library_loader_hooks.h"
 #include "content/public/common/content_descriptors.h"
 #include "ipc/ipc_descriptors.h"
 #include "jni/ChildProcessService_jni.h"
@@ skipping 74 matching lines @@
   // Register the file descriptors.
   // This includes the IPC channel, the crash dump signals and resource related
   // files.
   DCHECK(file_fds.size() == file_ids.size());
   for (size_t i = 0; i < file_ids.size(); ++i)
     base::GlobalDescriptors::GetInstance()->Set(file_ids[i], file_fds[i]);
 
   content::SurfaceTexturePeer::InitInstance(
       new SurfaceTexturePeerChildImpl(service));
 
+  base::android::MemoryPressureListenerAndroid::RegisterSystemCallback(env);
 }
 
 void QuitMainThreadMessageLoop() {
   base::MessageLoop::current()->Quit();
 }
 
 }  // namespace <anonymous>
 
 void InitChildProcess(JNIEnv* env,
                           jclass clazz,
@@ skipping 27 matching lines @@
   ChildProcess* current_process = ChildProcess::current();
   if (!current_process)
     return;
   ChildThread* main_child_thread = current_process->main_thread();
   if (main_child_thread && main_child_thread->message_loop())
     main_child_thread->message_loop()->PostTask(FROM_HERE,
         base::Bind(&QuitMainThreadMessageLoop));
 }
 
 }  // namespace content