Fixing Canvas2DLayerBridge to handle lost graphics contexts

Source/core/platform/graphics/Extensions3D.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:
  *
  * 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
@@ skipping 212 matching lines @@
 void Extensions3D::drawElementsInstancedANGLE(GC3Denum mode, GC3Dsizei count, GC3Denum type, GC3Dintptr offset, GC3Dsizei primcount)
 {
     m_context->webContext()->drawElementsInstancedANGLE(mode, count, type, offset, primcount);
 }
 
 void Extensions3D::vertexAttribDivisorANGLE(GC3Duint index, GC3Duint divisor)
 {
     m_context->webContext()->vertexAttribDivisorANGLE(index, divisor);
 }
 
+void Extensions3D::loseContextCHROMIUM(GC3Denum current, GC3Denum other)
+{
+    m_context->webContext()->loseContextCHROMIUM(current, other);
+}
+
 } // namespace WebCore