Remove premultipliedAlpha from WebGraphicsContext3D::Attributes.

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 867 matching lines @@
     ADD_VALUES_TO_SET(m_supportedTypes, kSupportedTypesES2);
 }
 
 PassRefPtr<DrawingBuffer> WebGLRenderingContextBase::createDrawingBuffer(PassOwnPtr<WebGraphicsContext3DProvider> contextProvider)
 {
     WebGraphicsContext3D::Attributes attrs;
     attrs.alpha = m_requestedAttributes.alpha();
     attrs.depth = m_requestedAttributes.depth();
     attrs.stencil = m_requestedAttributes.stencil();
     attrs.antialias = m_requestedAttributes.antialias();
-    attrs.premultipliedAlpha = m_requestedAttributes.premultipliedAlpha();
+    bool premultipliedAlpha = m_requestedAttributes.premultipliedAlpha();
     DrawingBuffer::PreserveDrawingBuffer preserve = m_requestedAttributes.preserveDrawingBuffer() ? DrawingBuffer::Preserve : DrawingBuffer::Discard;
-    return DrawingBuffer::create(contextProvider, clampedCanvasSize(), preserve, attrs);
+    return DrawingBuffer::create(contextProvider, clampedCanvasSize(), premultipliedAlpha, preserve, attrs);
 }
 
 void WebGLRenderingContextBase::initializeNewContext()
 {
     ASSERT(!isContextLost());
     ASSERT(drawingBuffer());
 
     m_markedCanvasDirty = false;
     m_activeTextureUnit = 0;
     m_packAlignment = 4;
@@ skipping 5443 matching lines @@
         contextGL()->PixelStorei(GL_UNPACK_ALIGNMENT, 1);
 }
 
 void WebGLRenderingContextBase::restoreUnpackParameters()
 {
     if (m_unpackAlignment != 1)
         contextGL()->PixelStorei(GL_UNPACK_ALIGNMENT, m_unpackAlignment);
 }
 
 } // namespace blink