Streamline the presentation of ImageBitmapRenderingContext

third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.cpp

 /*
  * Copyright (C) 2009 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 5144 matching lines @@
           funcName, functionID, canvas, sourceSubRectangle, depth,
           unpackImageHeight, &selectingSubRectangle)) {
     return;
   }
 
   if (functionID == TexImage2D || functionID == TexSubImage2D) {
     // texImageByGPU relies on copyTextureCHROMIUM which doesn't support
     // float/integer/sRGB internal format.
     // TODO(crbug.com/622958): relax the constrains if copyTextureCHROMIUM is
     // upgraded to handle more formats.
-    if (!canvas->renderingContext() ||
-        !canvas->renderingContext()->isAccelerated() ||
+    if (!canvas->isAccelerated() ||
         !canUseTexImageByGPU(functionID, internalformat, type)) {
       // 2D canvas has only FrontBuffer.
       texImageImpl(functionID, target, level, internalformat, xoffset, yoffset,
                    zoffset, format, type,
                    canvas
                        ->copiedImage(FrontBuffer, PreferAcceleration,
                                      functionIDToSnapshotReason(functionID))
                        .get(),
                    WebGLImageConversion::HtmlDomCanvas, m_unpackFlipY,
                    m_unpackPremultiplyAlpha, sourceSubRectangle, 1, 0);
@@ skipping 2673 matching lines @@
 
 void WebGLRenderingContextBase::getHTMLOrOffscreenCanvas(
     HTMLCanvasElementOrOffscreenCanvas& result) const {
   if (canvas())
     result.setHTMLCanvasElement(canvas());
   else
     result.setOffscreenCanvas(offscreenCanvas());
 }
 
 }  // namespace blink