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

gpu/command_buffer/service/context_state.h

Index: gpu/command_buffer/service/context_state.h
diff --git a/gpu/command_buffer/service/context_state.h b/gpu/command_buffer/service/context_state.h
index 47f180ae03b6b793d20231235d862e0a4fdc693f..14a6d410662d7a47cfc8e91afdb73e3de25ba7c0 100644
--- a/gpu/command_buffer/service/context_state.h
+++ b/gpu/command_buffer/service/context_state.h
@@ -70,13 +70,13 @@ struct GPU_EXPORT TextureUnit {
   }
 
   void Unbind(TextureRef* texture) {
-    if (bound_texture_2d == texture) {
+    if (bound_texture_2d.get() == texture) {
       bound_texture_2d = NULL;
     }
-    if (bound_texture_cube_map == texture) {
+    if (bound_texture_cube_map.get() == texture) {
       bound_texture_cube_map = NULL;
     }
-    if (bound_texture_external_oes == texture) {
+    if (bound_texture_external_oes.get() == texture) {
       bound_texture_external_oes = NULL;
     }
   }