[Android] Suspend shared timers for hidden renderers

chrome/renderer/chrome_content_renderer_client.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 "chrome/renderer/chrome_content_renderer_client.h"
 
 #include "base/command_line.h"
 #include "base/debug/crash_logging.h"
 #include "base/logging.h"
 #include "base/metrics/field_trial.h"
@@ skipping 1151 matching lines @@
 }
 
 bool ChromeContentRendererClient::RunIdleHandlerWhenWidgetsHidden() {
 #if defined(ENABLE_EXTENSIONS)
   return !IsStandaloneExtensionProcess();
 #else
   return true;
 #endif
 }
 
+bool ChromeContentRendererClient::
+    AllowTimerSuspensionWhenProcessBackgrounded() {
+#if defined(OS_ANDROID)
+  return true;
+#else
+  return false;
+#endif
+}
+
 bool ChromeContentRendererClient::AllowPopup() {
 #if defined(ENABLE_EXTENSIONS)
   extensions::ScriptContext* current_context =
       extension_dispatcher_->script_context_set().GetCurrent();
   if (!current_context || !current_context->extension())
     return false;
   // See http://crbug.com/117446 for the subtlety of this check.
   switch (current_context->context_type()) {
     case extensions::Feature::UNSPECIFIED_CONTEXT:
     case extensions::Feature::WEB_PAGE_CONTEXT:
@@ skipping 460 matching lines @@
       context, url);
 #endif
 }
 
 void ChromeContentRendererClient::WillDestroyServiceWorkerContextOnWorkerThread(
     const GURL& url) {
 #if defined(ENABLE_EXTENSIONS)
   extensions::Dispatcher::WillDestroyServiceWorkerContextOnWorkerThread(url);
 #endif
 }