Create manager to track OffscreenCanvasSurfaceImpl instances

third_party/WebKit/Source/platform/graphics/OffscreenCanvasFrameDispatcherImpl.cpp

 // Copyright 2016 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.
 
 #include "platform/graphics/OffscreenCanvasFrameDispatcherImpl.h"
 
 #include "cc/output/compositor_frame.h"
 #include "cc/quads/texture_draw_quad.h"
 #include "gpu/command_buffer/client/gles2_interface.h"
 #include "platform/Histogram.h"
 #include "platform/graphics/gpu/SharedGpuContext.h"
 #include "public/platform/InterfaceProvider.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebGraphicsContext3DProvider.h"
 #include "public/platform/modules/offscreencanvas/offscreen_canvas_surface.mojom-blink.h"
 #include "third_party/khronos/GLES2/gl2.h"
 #include "third_party/khronos/GLES2/gl2ext.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "third_party/skia/include/core/SkImage.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/transform.h"
 #include "wtf/typed_arrays/ArrayBuffer.h"
 #include "wtf/typed_arrays/Uint8Array.h"
 
 namespace blink {
 
 OffscreenCanvasFrameDispatcherImpl::OffscreenCanvasFrameDispatcherImpl(
+    int canvasId,
     uint32_t clientId,
     uint32_t sinkId,
     uint32_t localId,
     uint64_t nonce,
     int width,
     int height)
     : m_surfaceId(cc::FrameSinkId(clientId, sinkId),
                   cc::LocalFrameId(localId, nonce)),
       m_width(width),
       m_height(height),
       m_nextResourceId(1u),
       m_binding(this) {
   DCHECK(!m_sink.is_bound());
   mojom::blink::OffscreenCanvasCompositorFrameSinkProviderPtr provider;
   Platform::current()->interfaceProvider()->getInterface(
       mojo::GetProxy(&provider));
-  provider->CreateCompositorFrameSink(m_surfaceId,
+  provider->CreateCompositorFrameSink(canvasId, m_surfaceId,
                                       m_binding.CreateInterfacePtrAndBind(),
                                       mojo::GetProxy(&m_sink));
 }
 
 void OffscreenCanvasFrameDispatcherImpl::setTransferableResourceToSharedBitmap(
     cc::TransferableResource& resource,
     RefPtr<StaticBitmapImage> image) {
   std::unique_ptr<cc::SharedBitmap> bitmap =
       Platform::current()->allocateSharedBitmap(IntSize(m_width, m_height));
   if (!bitmap)
@@ skipping 273 matching lines @@
 }
 
 bool OffscreenCanvasFrameDispatcherImpl::verifyImageSize(
     const sk_sp<SkImage>& image) {
   if (image && image->width() == m_width && image->height() == m_height)
     return true;
   return false;
 }
 
 }  // namespace blink