Allow each WGC3D subclass to determine the correct GrGLInterface for its GrContext.

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 "gpu/GLES2/gl2.h"
 #ifndef GL_GLEXT_PROTOTYPES
@@ skipping 53 matching lines @@
 static const char* kWebGLPreferredGLExtensions =
     "GL_OES_packed_depth_stencil "
     "GL_OES_depth24 "
     "GL_CHROMIUM_webglsl";
 
 bool WebGraphicsContext3DCommandBufferImpl::initialize(
     WebGraphicsContext3D::Attributes attributes,
     WebKit::WebView* web_view,
     bool render_directly_to_web_view) {
   TRACE_EVENT0("gpu", "WebGfxCtx3DCmdBfrImpl::initialize");
-  webkit_glue::BindSkiaToCommandBufferGL();
   RenderThread* render_thread = RenderThread::current();
   if (!render_thread)
     return false;
   GpuChannelHost* host = render_thread->EstablishGpuChannelSync(
     content::
       CAUSE_FOR_GPU_LAUNCH_WEBGRAPHICSCONTEXT3DCOMMANDBUFFERIMPL_INITIALIZE);
   if (!host)
     return false;
   DCHECK(host->state() == GpuChannelHost::kConnected);
 
@@ skipping 947 matching lines @@
 
   return context_lost_reason_;
 }
 
 void WebGraphicsContext3DCommandBufferImpl::
     setSwapBuffersCompleteCallbackCHROMIUM(
     WebGraphicsContext3D::WebGraphicsSwapBuffersCompleteCallbackCHROMIUM* cb) {
   swapbuffers_complete_callback_ = cb;
 }
 
+#if WEBKIT_USING_SKIA
+GrGLInterface* WebGraphicsContext3DCommandBufferImpl::grGLInterface() {
+  return webkit_glue::GetCommandBufferSkiaGLBinding();
+}
+#endif
+
 namespace {
 
 WGC3Denum convertReason(RendererGLContext::ContextLostReason reason) {
   switch (reason) {
   case RendererGLContext::kGuilty:
     return GL_GUILTY_CONTEXT_RESET_ARB;
   case RendererGLContext::kInnocent:
     return GL_INNOCENT_CONTEXT_RESET_ARB;
   case RendererGLContext::kUnknown:
     return GL_UNKNOWN_CONTEXT_RESET_ARB;
@@ skipping 13 matching lines @@
   }
 #ifndef WTF_USE_THREADED_COMPOSITING
   RenderView* renderview =
       web_view_ ? RenderView::FromWebView(web_view_) : NULL;
   if (renderview)
     renderview->OnViewContextSwapBuffersAborted();
 #endif
 }
 
 #endif  // defined(ENABLE_GPU)