scheduler: Throttle timers in out-of-view frames

third_party/WebKit/Source/platform/scheduler/renderer/web_frame_scheduler_impl.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 THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_RENDERER_WEB_FRAME_SCHEDULER_IMPL_H_
 #define THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_RENDERER_WEB_FRAME_SCHEDULER_IMPL_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 23 matching lines @@
  public:
   WebFrameSchedulerImpl(RendererSchedulerImpl* renderer_scheduler,
                         WebViewSchedulerImpl* parent_web_view_scheduler,
                         base::trace_event::BlameContext* blame_context);
 
   ~WebFrameSchedulerImpl() override;
 
   // WebFrameScheduler implementation:
   void setFrameVisible(bool frame_visible) override;
   void setPageVisible(bool page_visible) override;
+  void setCrossOrigin(bool cross_origin) override;
   WebTaskRunner* loadingTaskRunner() override;
   WebTaskRunner* timerTaskRunner() override;
   WebTaskRunner* unthrottledTaskRunner() override;
   WebViewScheduler* webViewScheduler() override;
   void didStartLoading(unsigned long identifier) override;
   void didStopLoading(unsigned long identifier) override;
   void setDocumentParsingInBackground(bool background_parser_active) override;
 
  private:
   friend class WebViewSchedulerImpl;
 
   void DetachFromWebViewScheduler();
   void ApplyPolicyToTimerQueue();
+  bool ShouldThrottleTimers() const;
+  void UpdateTimerThrottling(bool was_throttled);
 
   scoped_refptr<TaskQueue> loading_task_queue_;
   scoped_refptr<TaskQueue> timer_task_queue_;
   scoped_refptr<TaskQueue> unthrottled_task_queue_;
   std::unique_ptr<WebTaskRunnerImpl> loading_web_task_runner_;
   std::unique_ptr<WebTaskRunnerImpl> timer_web_task_runner_;
   std::unique_ptr<WebTaskRunnerImpl> unthrottled_web_task_runner_;
   RendererSchedulerImpl* renderer_scheduler_;        // NOT OWNED
   WebViewSchedulerImpl* parent_web_view_scheduler_;  // NOT OWNED
   base::trace_event::BlameContext* blame_context_;   // NOT OWNED
   TaskQueue::PumpPolicy virtual_time_pump_policy_;
   bool frame_visible_;
   bool page_visible_;
+  bool cross_origin_;
 
   DISALLOW_COPY_AND_ASSIGN(WebFrameSchedulerImpl);
 };
 
 }  // namespace scheduler
 }  // namespace blink
 
 #endif  // THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_RENDERER_WEB_FRAME_SCHEDULER_IMPL_H_