Expose mapExternalTexture extension to WebGraphicsContext3D

content/renderer/gpu/webgraphicscontext3d_command_buffer_impl.cc

 // 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.
 
 #if defined(ENABLE_GPU)
 
 #include "content/renderer/gpu/webgraphicscontext3d_command_buffer_impl.h"
 
 #include <GLES2/gl2.h>
 #ifndef GL_GLEXT_PROTOTYPES
@@ skipping 322 matching lines @@
 void WebGraphicsContext3DCommandBufferImpl::copyTextureToParentTextureCHROMIUM(
     WebGLId texture, WebGLId parentTexture) {
   TRACE_EVENT0("gpu", "WebGfxCtx3DCmdBfrImpl::copyTextureToCompositor");
 
   gl_->Flush();
   context_->MapExternalResourceToParent(gpu::resource_type::kTexture,
                                         texture,
                                         parentTexture);
 }
 
+void WebGraphicsContext3DCommandBufferImpl::mapExternalTextureCHROMIUM(
+    WebGLId source_texture, WebGraphicsContext3D* source_context,
+    WebGLId destination_texture) {
+  WebGraphicsContext3DCommandBufferImpl* source_cmdbuffer_context =
+    static_cast<WebGraphicsContext3DCommandBufferImpl*>(source_context);

[apatrick_chromium, 2011/07/29 23:59:04]

indentation

+  context_->MapExternalResource(gpu::resource_type::kTexture,
+                                source_texture,
+                                source_cmdbuffer_context->context(),
+                                destination_texture);
+
+}
+
+
 void WebGraphicsContext3DCommandBufferImpl::
     rateLimitOffscreenContextCHROMIUM() {
   gl_->RateLimitOffscreenContextCHROMIUM();
 }
 
 WebKit::WebString WebGraphicsContext3DCommandBufferImpl::
     getRequestableExtensionsCHROMIUM() {
   return WebKit::WebString::fromUTF8(
       gl_->GetRequestableExtensionsCHROMIUM());
 }
@@ skipping 669 matching lines @@
     context_lost_callback_->onContextLost();
   }
 
   RenderView* renderview =
       web_view_ ? RenderView::FromWebView(web_view_) : NULL;
   if (renderview)
     renderview->OnViewContextSwapBuffersAborted();
 }
 
 #endif  // defined(ENABLE_GPU)