Update gpu/ to use scoped_refptr<T>::get() rather than implicit "operator T*"

gpu/command_buffer/service/renderbuffer_manager.cc

Index: gpu/command_buffer/service/renderbuffer_manager.cc
diff --git a/gpu/command_buffer/service/renderbuffer_manager.cc b/gpu/command_buffer/service/renderbuffer_manager.cc
index 416de3bc77f3d9b77975d7b7bb67173aec8392b5..c5a7b067e4fe91f0b84bb2f56ca1fa9532ee7d6c 100644
--- a/gpu/command_buffer/service/renderbuffer_manager.cc
+++ b/gpu/command_buffer/service/renderbuffer_manager.cc
@@ -143,7 +143,7 @@ Renderbuffer* RenderbufferManager::GetRenderbuffer(
 void RenderbufferManager::RemoveRenderbuffer(GLuint client_id) {
   RenderbufferMap::iterator it = renderbuffers_.find(client_id);
   if (it != renderbuffers_.end()) {
-    Renderbuffer* renderbuffer = it->second;
+    Renderbuffer* renderbuffer = it->second.get();
     renderbuffer->MarkAsDeleted();
     renderbuffers_.erase(it);
   }