Merge 92520 - [chromium] Accelerated canvas breaks when moving canvases or resources between Pages

Source/WebCore/platform/graphics/gpu/DrawingBuffer.cpp

 /*
  * Copyright (c) 2010, Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 268 matching lines @@
             resizeDepthStencil(0);
         if (m_context->checkFramebufferStatus(GraphicsContext3D::FRAMEBUFFER) != GraphicsContext3D::FRAMEBUFFER_COMPLETE) {
             // Cleanup
             clear();
             return false;
         }
     }
 
     clearFramebuffer();
 
-    didReset();
-
     return true;
 }
 
 void DrawingBuffer::commit(long x, long y, long width, long height)
 {
     if (!m_context)
         return;
         
     if (width < 0)
         width = m_size.width();
@@ skipping 16 matching lines @@
     if (!m_context)
         return;
         
     m_context->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, m_multisampleFBO ? m_multisampleFBO : m_fbo);
     m_context->viewport(0, 0, m_size.width(), m_size.height());
 }
 
 } // namespace WebCore
 
 #endif