Minor scoped_refptr cleanup in cc::OutputSurface.

content/renderer/gpu/compositor_output_surface.cc

Index: content/renderer/gpu/compositor_output_surface.cc
diff --git a/content/renderer/gpu/compositor_output_surface.cc b/content/renderer/gpu/compositor_output_surface.cc
index bc8984834f6d8b46cf54fc6004611ab910f8d859..2f7cfc8c5ee9336f69d609c86fea03ecd9456f87 100644
--- a/content/renderer/gpu/compositor_output_surface.cc
+++ b/content/renderer/gpu/compositor_output_surface.cc
@@ -188,7 +188,7 @@ void CompositorOutputSurface::SwapBuffers(cc::CompositorFrame* frame) {
   if (frame->gl_frame_data) {
     context_provider()->ContextGL()->ShallowFlushCHROMIUM();
     ContextProviderCommandBuffer* provider_command_buffer =
-        static_cast<ContextProviderCommandBuffer*>(context_provider().get());
+        static_cast<ContextProviderCommandBuffer*>(context_provider());
     CommandBufferProxyImpl* command_buffer_proxy =
         provider_command_buffer->GetCommandBufferProxy();
     DCHECK(command_buffer_proxy);