First fix to minimize copying of image data.

chrome/browser/sync/sync_setup_wizard.cc

Index: chrome/browser/sync/sync_setup_wizard.cc
diff --git a/chrome/browser/sync/sync_setup_wizard.cc b/chrome/browser/sync/sync_setup_wizard.cc
index 7d00ab9f939a383c2909e2290d8184a6db534710..ec39995b8091b490334494506ada39fc03a92df9 100644
--- a/chrome/browser/sync/sync_setup_wizard.cc
+++ b/chrome/browser/sync/sync_setup_wizard.cc
@@ -42,9 +42,10 @@ void SyncResourcesSource::StartDataRequest(const std::string& path_raw,
                                            int request_id) {
   scoped_refptr<RefCountedBytes> html_bytes(new RefCountedBytes);
   if (path_raw == chrome::kSyncThrobberPath) {
-    ResourceBundle::GetSharedInstance().LoadImageResourceBytes(IDR_THROBBER,
-        &html_bytes->data);
-    SendResponse(request_id, html_bytes);
+    scoped_refptr<RefCountedMemory> throbber(
+        ResourceBundle::GetSharedInstance().LoadImageResourceBytes(
+            IDR_THROBBER));
+    SendResponse(request_id, throbber);
     return;
   }