Expose mapExternalTexture extension to WebGraphicsContext3D

webkit/gpu/webgraphicscontext3d_in_process_command_buffer_impl.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WEBKIT_GPU_WEBGRAPHICSCONTEXT3D_IN_PROCESS_COMMAND_BUFFER_IMPL_H_
 #define WEBKIT_GPU_WEBGRAPHICSCONTEXT3D_IN_PROCESS_COMMAND_BUFFER_IMPL_H_
 #pragma once
 
 #if defined(ENABLE_GPU)
 
@@ skipping 387 matching lines @@
       WGC3Dint yoffset,
       WGC3Dsizei width,
       WGC3Dsizei height,
       WGC3Denum format,
       WGC3Denum type,
       WGC3Denum access);
   virtual void unmapTexSubImage2DCHROMIUM(const void*);
 
   virtual void copyTextureToParentTextureCHROMIUM(
       WebGLId texture, WebGLId parentTexture);
+  virtual void mapExternalTextureCHROMIUM(
+      WebGLId source_texture, WebGraphicsContext3D* source_context,
+      WebGLId destination_texture);
 
   virtual void rateLimitOffscreenContextCHROMIUM();
 
   virtual WebKit::WebString getRequestableExtensionsCHROMIUM();
   virtual void requestExtensionCHROMIUM(const char*);
 
   virtual void blitFramebufferCHROMIUM(
       WGC3Dint srcX0, WGC3Dint srcY0, WGC3Dint srcX1, WGC3Dint srcY1,
       WGC3Dint dstX0, WGC3Dint dstY0, WGC3Dint dstX1, WGC3Dint dstY1,
       WGC3Dbitfield mask, WGC3Denum filter);
   virtual void renderbufferStorageMultisampleCHROMIUM(
       WGC3Denum target, WGC3Dsizei samples, WGC3Denum internalformat,
       WGC3Dsizei width, WGC3Dsizei height);
 
   virtual WebGLId createCompositorTexture(WGC3Dsizei width, WGC3Dsizei height);
   virtual void deleteCompositorTexture(WebGLId parent_texture);
   virtual void copyTextureToCompositor(WebGLId texture,
                                        WebGLId parent_texture);
 
   virtual void setContextLostCallback(
       WebGraphicsContext3D::WebGraphicsContextLostCallback* callback);
   virtual WGC3Denum getGraphicsResetStatusARB();
 
+  GLInProcessContext* context() const { return context_; }
+
  private:
   // SwapBuffers callback.
   void OnSwapBuffersComplete();
   virtual void OnContextLost();
 
   // Used to try to find bugs in code that calls gl directly through the gl api
   // instead of going through WebGraphicsContext3D.
   void ClearContext();
 
   // The context we use for OpenGL rendering.
@@ skipping 27 matching lines @@
 #endif
 };
 
 }  // namespace gpu
 }  // namespace webkit
 
 #endif  // defined(ENABLE_GPU)
 #endif  // WEBKIT_GPU_WEBGRAPHICSCONTEXT3D_IN_PROCESS_COMMAND_BUFFER_IMPL_H_