Call scoped_refptr<T>::get() rather than relying on implicit "operator T*"

content/browser/storage_partition_impl_map.cc

Index: content/browser/storage_partition_impl_map.cc
diff --git a/content/browser/storage_partition_impl_map.cc b/content/browser/storage_partition_impl_map.cc
index 898769267ada41def18444c81ea659b66d4a6980..a8b41cc3a052777a5a75c460e30c330c966e1709 100644
--- a/content/browser/storage_partition_impl_map.cc
+++ b/content/browser/storage_partition_impl_map.cc
@@ -82,9 +82,10 @@ class BlobProtocolHandler : public net::URLRequestJobFactory::ProtocolHandler {
         StreamContext* stream_context,
         fileapi::FileSystemContext* file_system_context)
         : webkit_blob::BlobProtocolHandler(
-              blob_storage_controller, file_system_context,
-              BrowserThread::GetMessageLoopProxyForThread(
-                  BrowserThread::FILE)),
+              blob_storage_controller,
+              file_system_context,
+              BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE)
+                  .get()),
           stream_context_(stream_context) {}
 
     virtual ~WebKitBlobProtocolHandlerImpl() {}