Merge 135809 - [Chromium] Shared graphics context should only pushGroupMarker() once

Source/WebCore/platform/graphics/skia/ImageBufferSkia.cpp

 /*
  * Copyright (c) 2008, Google Inc. All rights reserved.
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
@@ skipping 61 matching lines @@
 }
 
 static SkCanvas* createAcceleratedCanvas(const IntSize& size, ImageBufferData* data, DeferralMode deferralMode)
 {
     RefPtr<GraphicsContext3D> context3D = SharedGraphicsContext3D::get();
     if (!context3D)
         return 0;
     GrContext* gr = context3D->grContext();
     if (!gr)
         return 0;
-    context3D->getExtensions()->pushGroupMarkerEXT("AcceleratedCanvasContext");
     gr->resetContext();
     GrTextureDesc desc;
     desc.fFlags = kRenderTarget_GrTextureFlagBit;
     desc.fSampleCnt = 0;
     desc.fWidth = size.width();
     desc.fHeight = size.height();
     desc.fConfig = kSkia8888_GrPixelConfig;
     SkAutoTUnref<GrTexture> texture(gr->createUncachedTexture(desc, 0, 0));
     if (!texture.get())
         return 0;
@@ skipping 299 matching lines @@
     if (!encodeImage(imageData, mimeType, quality, &encodedImage))
         return "data:,";
 
     Vector<char> base64Data;
     base64Encode(encodedImage, base64Data);
 
     return "data:" + mimeType + ";base64," + base64Data;
 }
 
 } // namespace WebCore