Merge 104636 - [chromium] Correctly recreate DrawingBuffer on lost device

Source/WebCore/html/canvas/WebGLRenderingContext.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 5007 matching lines @@
             m_restoreTimer.startOneShot(secondsBetweenRestoreAttempts);
         else
             // This likely shouldn't happen but is the best way to report it to the WebGL app.
             m_context->synthesizeGLError(GraphicsContext3D::INVALID_OPERATION);
         return;
     }
 
     // Construct a new drawing buffer with the new GraphicsContext3D.
     if (m_drawingBuffer) {
         m_drawingBuffer->discardResources();
-        m_drawingBuffer = DrawingBuffer::create(m_context.get(), m_drawingBuffer->size(), !m_attributes.preserveDrawingBuffer);
+        m_drawingBuffer = DrawingBuffer::create(context.get(), m_drawingBuffer->size(), !m_attributes.preserveDrawingBuffer);
+        m_drawingBuffer->bind();
     }
 
     m_context = context;
     m_contextLost = false;
     initializeNewContext();
     canvas()->dispatchEvent(WebGLContextEvent::create(eventNames().webglcontextrestoredEvent, false, true, ""));
 }
 
 WebGLRenderingContext::LRUImageBufferCache::LRUImageBufferCache(int capacity)
     : m_buffers(adoptArrayPtr(new OwnPtr<ImageBuffer>[capacity]))
@@ skipping 27 matching lines @@
 
 void WebGLRenderingContext::LRUImageBufferCache::bubbleToFront(int idx)
 {
     for (int i = idx; i > 0; --i)
         m_buffers[i].swap(m_buffers[i-1]);
 }
 
 } // namespace WebCore
 
 #endif // ENABLE(WEBGL)