Merge 92908 - Readback composited webgl results for printing

Source/WebKit/chromium/public/WebGraphicsContext3D.h

 /*
  * 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 120 matching lines @@
 
     // Query whether it is built on top of compliant GLES2 implementation.
     virtual bool isGLES2Compliant() = 0;
 
     virtual bool setParentContext(WebGraphicsContext3D* parentContext) { return false; }
 
     // Helper for software compositing path. Reads back the frame buffer into
     // the memory region pointed to by "pixels" with size "bufferSize". It is
     // expected that the storage for "pixels" covers (4 * width * height) bytes.
     // Returns true on success.
-    virtual bool readBackFramebuffer(unsigned char* pixels, size_t bufferSize) = 0;
+    virtual bool readBackFramebuffer(unsigned char* pixels, size_t bufferSize, WebGLId framebuffer, int width, int height) = 0;
 
     // Returns the id of the texture which is used for storing the contents of
     // the framebuffer associated with this context. This texture is accessible
     // by the gpu-based page compositor.
     virtual WebGLId getPlatformTextureId() = 0;
 
     // Copies the contents of the off-screen render target used by the WebGL
     // context to the corresponding texture used by the compositor.
     virtual void prepareTexture() = 0;
 
@@ skipping 208 matching lines @@
     //
     // This entry point must provide slightly different semantics than
     // the GL_ARB_robustness extension; specifically, the lost context
     // state is sticky, rather than reported only once.
     virtual WGC3Denum getGraphicsResetStatusARB() { return 0; /* GL_NO_ERROR */ }
 };
 
 } // namespace WebKit
 
 #endif