Refactor AcceleratedStaticBitmapImage

third_party/WebKit/public/platform/WebTaskRunner.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 WebTaskRunner_h
 #define WebTaskRunner_h
 
 #include "WebCommon.h"
 #include "base/callback_forward.h"
 #include "public/platform/WebTraceLocation.h"
@@ skipping 72 matching lines @@
 
   // Schedule a task to be run after |delayMs| on the the associated WebThread.
   // Can be called from any thread.
   virtual void postDelayedTask(const WebTraceLocation&,
                                const base::Closure&,
                                double delayMs) = 0;
 
   // Returns a clone of the WebTaskRunner.
   virtual std::unique_ptr<WebTaskRunner> clone() = 0;
 
+  // Returns true if this is a clone of another WebTaskRunner.
+  virtual bool isCloneOf(WebTaskRunner*) = 0;
+
   // Returns true if the current thread is a thread on which a task may be run.
   // Can be called from any thread.
   virtual bool runsTasksOnCurrentThread() = 0;
 
   // ---
 
   // Headless Chrome virtualises time for determinism and performance (fast
   // forwarding of timers). To make this work some parts of blink (e.g. Timers)
   // need to use virtual time, however by default new code should use the normal
   // non-virtual time APIs.
@@ skipping 36 matching lines @@
   RefPtr<TaskHandle> postDelayedCancellableTask(const WebTraceLocation&,
                                                 std::unique_ptr<WTF::Closure>,
                                                 long long delayMs)
       WARN_UNUSED_RETURN;
 #endif
 };
 
 }  // namespace blink
 
 #endif  // WebTaskRunner_h