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

gpu/command_buffer/service/image_manager.cc

Index: gpu/command_buffer/service/image_manager.cc
diff --git a/gpu/command_buffer/service/image_manager.cc b/gpu/command_buffer/service/image_manager.cc
index b42477069e9f4d7ad887ea7b1413d2aa4c16c927..6be4e6677215830c704754e43ad182ad590632e1 100644
--- a/gpu/command_buffer/service/image_manager.cc
+++ b/gpu/command_buffer/service/image_manager.cc
@@ -26,7 +26,7 @@ void ImageManager::RemoveImage(int32 service_id) {
 gfx::GLImage* ImageManager::LookupImage(int32 service_id) {
   GLImageMap::const_iterator iter = gl_images_.find(service_id);
   if (iter != gl_images_.end())
-    return iter->second;
+    return iter->second.get();
 
   return NULL;
 }