Make Surface creation lazy for OffscreenCanvasFrameReceiverImpl

third_party/WebKit/Source/platform/graphics/CanvasSurfaceLayerBridge.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/CanvasSurfaceLayerBridge.h"
 
 #include "cc/layers/surface_layer.h"
 #include "cc/surfaces/surface_id.h"
 #include "cc/surfaces/surface_sequence.h"
 #include "platform/graphics/GraphicsLayer.h"
@@ skipping 14 matching lines @@
 
 CanvasSurfaceLayerBridge::~CanvasSurfaceLayerBridge()
 {
 }
 
 bool CanvasSurfaceLayerBridge::createSurfaceLayer(int canvasWidth, int canvasHeight)
 {
     if (!m_client->syncGetSurfaceId(&m_surfaceId))
         return false;
 
-    m_client->asyncRequestSurfaceCreation(m_surfaceId);
     cc::SurfaceLayer::SatisfyCallback satisfyCallback = convertToBaseCallback(WTF::bind(&CanvasSurfaceLayerBridge::satisfyCallback, WTF::unretained(this)));
     cc::SurfaceLayer::RequireCallback requireCallback = convertToBaseCallback(WTF::bind(&CanvasSurfaceLayerBridge::requireCallback, WTF::unretained(this)));
     m_surfaceLayer = cc::SurfaceLayer::Create(std::move(satisfyCallback), std::move(requireCallback));
     m_surfaceLayer->SetSurfaceId(m_surfaceId, 1.f, gfx::Size(canvasWidth, canvasHeight));
 
     m_webLayer = wrapUnique(Platform::current()->compositorSupport()->createLayerFromCCLayer(m_surfaceLayer.get()));
     GraphicsLayer::registerContentsLayer(m_webLayer.get());
     return true;
 }
 
 void CanvasSurfaceLayerBridge::satisfyCallback(const cc::SurfaceSequence& sequence)
 {
     m_client->asyncSatisfy(sequence);
 }
 
 void CanvasSurfaceLayerBridge::requireCallback(const cc::SurfaceId& surfaceId, const cc::SurfaceSequence& sequence)
 {
     m_client->asyncRequire(surfaceId, sequence);
 }
 
 } // namespace blink