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

chrome/browser/ui/cocoa/run_loop_testing.mm

Index: chrome/browser/ui/cocoa/run_loop_testing.mm
diff --git a/chrome/browser/ui/cocoa/run_loop_testing.mm b/chrome/browser/ui/cocoa/run_loop_testing.mm
index 9918c90a4ccd4081b69a6558bb1f9989259463c0..f79aa53308ff21c2ac81fed4071b93fedf526ce0 100644
--- a/chrome/browser/ui/cocoa/run_loop_testing.mm
+++ b/chrome/browser/ui/cocoa/run_loop_testing.mm
@@ -43,7 +43,7 @@ void NSRunLoopRunAllPending() {
   // Put a delayed selector on the queue. All other pending delayed selectors
   // will run before this, after which the internal loop can end.
   base::scoped_nsobject<CocoaQuitTask> quit_task(
-      [[CocoaQuitTask alloc] initWithMessagePump:message_pump]);
+      [[CocoaQuitTask alloc] initWithMessagePump:message_pump.get()]);
 
   [quit_task performSelector:@selector(doQuit)
                   withObject:nil