Use ContextProvider subclass to provide WGC3D pointers

content/common/gpu/client/context_provider_command_buffer.cc

Index: content/common/gpu/client/context_provider_command_buffer.cc
diff --git a/content/common/gpu/client/context_provider_command_buffer.cc b/content/common/gpu/client/context_provider_command_buffer.cc
index d5e82a3f7df6c88bdca60ede223a110d5d7db289..573476ec471a647f91b4f62e7ee6a64b16a166c9 100644
--- a/content/common/gpu/client/context_provider_command_buffer.cc
+++ b/content/common/gpu/client/context_provider_command_buffer.cc
@@ -87,6 +87,14 @@ int ContextProviderCommandBuffer::GetGPUProcessID() {
   return context3d_->GetGPUProcessID();
 }
 
+blink::WebGraphicsContext3D* ContextProviderCommandBuffer::WebContext3D() {
+  DCHECK(context3d_);
+  DCHECK(lost_context_callback_proxy_);  // Is bound to thread.
+  DCHECK(context_thread_checker_.CalledOnValidThread());
+
+  return context3d_.get();
+}
+
 bool ContextProviderCommandBuffer::BindToCurrentThread() {
   // This is called on the thread the context will be used.
   DCHECK(context_thread_checker_.CalledOnValidThread());
@@ -110,14 +118,6 @@ bool ContextProviderCommandBuffer::BindToCurrentThread() {
   return true;
 }
 
-WebGraphicsContext3DCommandBufferImpl*
-ContextProviderCommandBuffer::Context3d() {
-  DCHECK(lost_context_callback_proxy_);  // Is bound to thread.
-  DCHECK(context_thread_checker_.CalledOnValidThread());
-
-  return context3d_.get();
-}
-
 gpu::gles2::GLES2Interface* ContextProviderCommandBuffer::ContextGL() {
   DCHECK(context3d_);
   DCHECK(lost_context_callback_proxy_);  // Is bound to thread.