Suspend frame schedulers on a page suspension

third_party/WebKit/Source/core/dom/MainThreadTaskRunner.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Neither the name of Google Inc. nor the names of its
@@ skipping 10 matching lines @@
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef MainThreadTaskRunner_h
 #define MainThreadTaskRunner_h
 
 #include "core/CoreExport.h"
-#include "platform/Timer.h"
 #include "platform/heap/Handle.h"
+#include "public/platform/WebTraceLocation.h"
 #include "wtf/Allocator.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/PtrUtil.h"
-#include "wtf/Vector.h"
 #include "wtf/WeakPtr.h"
 #include "wtf/text/WTFString.h"
 #include <memory>
 
 namespace blink {
 
 class ExecutionContext;
 class ExecutionContextTask;
 
 class CORE_EXPORT MainThreadTaskRunner final {
@@ skipping 11 matching lines @@
   void postTask(const WebTraceLocation&,
                 std::unique_ptr<ExecutionContextTask>,
                 const String& taskNameForInstrumentation = emptyString());
 
   void postInspectorTask(const WebTraceLocation&,
                          std::unique_ptr<ExecutionContextTask>);
   void perform(std::unique_ptr<ExecutionContextTask>,
                bool isInspectorTask,
                bool instrumenting);
 
-  void suspend();
-  void resume();
-
  private:
   explicit MainThreadTaskRunner(ExecutionContext*);
 
-  void pendingTasksTimerFired(TimerBase*);
-
   void postTaskInternal(const WebTraceLocation&,
                         std::unique_ptr<ExecutionContextTask>,
                         bool isInspectorTask,
                         bool instrumenting);
 
   // Untraced back reference to the owner Document;
   // this object has identical lifetime to it.
   UntracedMember<ExecutionContext> m_context;
-  Timer<MainThreadTaskRunner> m_pendingTasksTimer;
-  Vector<std::pair<std::unique_ptr<ExecutionContextTask>,
-                   bool /* instrumenting */>>
-      m_pendingTasks;
-  bool m_suspended;
   WeakPtrFactory<MainThreadTaskRunner> m_weakFactory;
   WeakPtr<MainThreadTaskRunner> m_weakPtr;
 };
 
 inline std::unique_ptr<MainThreadTaskRunner> MainThreadTaskRunner::create(
     ExecutionContext* context) {
   return wrapUnique(new MainThreadTaskRunner(context));
 }
 
 }  // namespace blink
 
 #endif