Resume a backgrounded renderer that was purged and suspended

third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h

 // Copyright 2014 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_RENDERER_SCHEDULER_IMPL_H_
 #define THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_RENDERER_RENDERER_SCHEDULER_IMPL_H_
 
 #include "base/atomicops.h"
 #include "base/macros.h"
 #include "base/synchronization/lock.h"
@@ skipping 84 matching lines @@
   void DidCommitFrameToCompositor() override;
   void DidHandleInputEventOnCompositorThread(
       const WebInputEvent& web_input_event,
       InputEventState event_state) override;
   void DidHandleInputEventOnMainThread(
       const WebInputEvent& web_input_event) override;
   void DidAnimateForInputOnCompositorThread() override;
   void OnRendererBackgrounded() override;
   void OnRendererForegrounded() override;
   void SuspendRenderer() override;
+  void ResumeRenderer() override;
   void AddPendingNavigation(WebScheduler::NavigatingFrameType type) override;
   void RemovePendingNavigation(WebScheduler::NavigatingFrameType type) override;
   void OnNavigationStarted() override;
   bool IsHighPriorityWorkAnticipated() override;
   bool ShouldYieldForHighPriorityWork() override;
   bool CanExceedIdleDeadlineIfRequired() const override;
   void AddTaskObserver(base::MessageLoop::TaskObserver* task_observer) override;
   void RemoveTaskObserver(
       base::MessageLoop::TaskObserver* task_observer) override;
   void Shutdown() override;
@@ skipping 209 matching lines @@
       base::TimeTicks now,
       base::TimeDelta* expected_use_case_duration) const;
 
   // An input event of some sort happened, the policy may need updating.
   void UpdateForInputEventOnCompositorThread(WebInputEvent::Type type,
                                              InputEventState input_event_state);
 
   // Helpers for safely suspending/resuming the timer queue after a
   // background/foreground signal.
   void SuspendTimerQueueWhenBackgrounded();
-  void ResumeTimerQueueWhenForegrounded();
+  void ResumeTimerQueueWhenForegroundedOrResumed();
 
   // The task cost estimators and the UserModel need to be reset upon page
   // nagigation. This function does that. Must be called from the main thread.
   void ResetForNavigationLocked();
 
   // Estimates the maximum task length that won't cause a jank based on the
   // current system state. Must be called from the main thread.
   base::TimeDelta EstimateLongestJankFreeTaskDuration() const;
 
   // Report an intervention to all WebViews in this process.
@@ skipping 143 matching lines @@
   PollableThreadSafeFlag policy_may_need_update_;
   base::WeakPtrFactory<RendererSchedulerImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererSchedulerImpl);
 };
 
 }  // namespace scheduler
 }  // namespace blink
 
 #endif  // THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_RENDERER_RENDERER_SCHEDULER_IMPL_H_