Hook up V8 idle notifications for extension prcoesses.

chrome/renderer/render_thread.h

 // Copyright (c) 2009 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 CHROME_RENDERER_RENDER_THREAD_H_
 #define CHROME_RENDERER_RENDER_THREAD_H_
 
 #include <string>
 #include <vector>
 
 #include "app/gfx/native_widget_types.h"
 #include "base/shared_memory.h"
 #include "base/string16.h"
 #include "base/task.h"
+#include "base/time.h"
+#include "base/timer.h"
 #include "build/build_config.h"
 #include "chrome/common/child_thread.h"
 #include "chrome/common/css_colors.h"
 #include "chrome/common/dom_storage_type.h"
 #include "chrome/renderer/renderer_histogram_snapshots.h"
 #include "chrome/renderer/visitedlink_slave.h"
 #include "ipc/ipc_platform_file.h"
 
 class AppCacheDispatcher;
 class DBMessageFilter;
@@ skipping 93 matching lines @@
   AppCacheDispatcher* appcache_dispatcher() const {
     return appcache_dispatcher_.get();
   }
 
   SpellCheck* spellchecker() const {
     return spellchecker_.get();
   }
 
   bool plugin_refresh_allowed() const { return plugin_refresh_allowed_; }
 
+  bool is_extension_process() const { return is_extension_process_; }
+
   // Do DNS prefetch resolution of a hostname.
   void Resolve(const char* name, size_t length);
 
   // Send all the Histogram data to browser.
   void SendHistograms(int sequence_number);
 
   // Invokes InformHostOfCacheStats after a short delay.  Used to move this
   // bookkeeping operation off the critical latency path.
   void InformHostOfCacheStatsLater();
 
@@ skipping 61 matching lines @@
   // These functions should be call periodically so that the host can make
   // decisions about how to allocation resources using current information.
   void InformHostOfCacheStats();
 
   // We initialize WebKit as late as possible.
   void EnsureWebKitInitialized();
 
   // A task we invoke periodically to assist with idle cleanup.
   void IdleHandler();
 
+  // Schedule a call to IdleHandler with the given initial delay.
+  void ScheduleIdleHandler(double initial_delay_s);
+
   // These objects live solely on the render thread.
   scoped_ptr<ScopedRunnableMethodFactory<RenderThread> > task_factory_;
   scoped_ptr<VisitedLinkSlave> visited_link_slave_;
   scoped_ptr<UserScriptSlave> user_script_slave_;
   scoped_ptr<RenderDnsMaster> dns_master_;
   scoped_ptr<AppCacheDispatcher> appcache_dispatcher_;
   scoped_refptr<DevToolsAgentFilter> devtools_agent_filter_;
   scoped_ptr<RendererHistogramSnapshots> histogram_snapshots_;
   scoped_ptr<RendererWebKitClientImpl> webkit_client_;
   scoped_ptr<WebKit::WebStorageEventDispatcher> dom_storage_event_dispatcher_;
@@ skipping 16 matching lines @@
 
   // The count of RenderWidgets running through this thread.
   int widget_count_;
 
   // The count of hidden RenderWidgets running through this thread.
   int hidden_widget_count_;
 
   // The current value of the idle notification timer delay.
   double idle_notification_delay_in_s_;
 
+  // True if this renderer is running extensions.
+  bool is_extension_process_;
+
+  // Timer that periodically calls IdleHandler.
+  base::RepeatingTimer<RenderThread> idle_timer_;
+
+  // Same as above, but on a longer timer and will run even if the process is
+  // not idle, to ensure that IdleHandle gets called eventually.
+  base::RepeatingTimer<RenderThread> forced_idle_timer_;
+
   DISALLOW_COPY_AND_ASSIGN(RenderThread);
 };
 
 #endif  // CHROME_RENDERER_RENDER_THREAD_H_