Add InProcessContextProvider and update InProcessCommandBuffer

gpu/ipc/gl_in_process_context.cc

Index: gpu/ipc/gl_in_process_context.cc
diff --git a/gpu/ipc/gl_in_process_context.cc b/gpu/ipc/gl_in_process_context.cc
index 16a1cb165000be73903c72fcce2a801c5d6eef90..c798a883d1a3c0b2144d86f707793df92f113ac8 100644
--- a/gpu/ipc/gl_in_process_context.cc
+++ b/gpu/ipc/gl_in_process_context.cc
@@ -64,6 +64,7 @@ class GLInProcessContextImpl
 
   // GLInProcessContext implementation:
   gles2::GLES2Implementation* GetImplementation() override;
+  InProcessCommandBuffer* GetInProcessCommandBuffer() override;
   void SetLock(base::Lock* lock) override;
 
  private:
@@ -88,6 +89,10 @@ gles2::GLES2Implementation* GLInProcessContextImpl::GetImplementation() {
   return gles2_implementation_.get();
 }
 
+InProcessCommandBuffer* GLInProcessContextImpl::GetInProcessCommandBuffer() {
+  return command_buffer_.get();
+}
+
 void GLInProcessContextImpl::SetLock(base::Lock* lock) {
   NOTREACHED();
 }