Add usage counter to OffscreenCanvas API calls

third_party/WebKit/Source/core/offscreencanvas/OffscreenCanvas.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 OffscreenCanvas_h
 #define OffscreenCanvas_h
 
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "bindings/core/v8/ScriptWrappable.h"
@@ skipping 23 matching lines @@
  public:
   static OffscreenCanvas* create(unsigned width, unsigned height);
 
   // IDL attributes
   unsigned width() const { return m_size.width(); }
   unsigned height() const { return m_size.height(); }
   void setWidth(unsigned, ExceptionState&);
   void setHeight(unsigned, ExceptionState&);
 
   // API Methods
-  ImageBitmap* transferToImageBitmap(ExceptionState&);
+  ImageBitmap* transferToImageBitmap(ScriptState*, ExceptionState&);
   ScriptPromise convertToBlob(ScriptState*,
                               const ImageEncodeOptions&,
                               ExceptionState&);
 
   IntSize size() const { return m_size; }
   void setAssociatedCanvasId(int canvasId) { m_canvasId = canvasId; }
   int getAssociatedCanvasId() const { return m_canvasId; }
   bool isNeutered() const { return m_isNeutered; }
   void setNeutered();
   CanvasRenderingContext* getCanvasRenderingContext(
@@ skipping 71 matching lines @@
   // then the following members would remain as initialized zero values.
   uint32_t m_clientId = 0;
   uint32_t m_sinkId = 0;
   uint32_t m_localId = 0;
   uint64_t m_nonce = 0;
 };
 
 }  // namespace blink
 
 #endif  // OffscreenCanvas_h