NSView cleanup for CoreAnimation

chrome/browser/ui/cocoa/tabs/tab_strip_controller.mm

Index: chrome/browser/ui/cocoa/tabs/tab_strip_controller.mm
diff --git a/chrome/browser/ui/cocoa/tabs/tab_strip_controller.mm b/chrome/browser/ui/cocoa/tabs/tab_strip_controller.mm
index 7c33924c21800c7320227988ea5a109f097e30dc..41e8bdf5030cc79402bc57e9809bd9d69f6ef3d7 100644
--- a/chrome/browser/ui/cocoa/tabs/tab_strip_controller.mm
+++ b/chrome/browser/ui/cocoa/tabs/tab_strip_controller.mm
@@ -71,6 +71,7 @@
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/theme_provider.h"
 #include "ui/gfx/image/image.h"
+#include "ui/gfx/mac/scoped_ns_disable_screen_updates.h"
 
 using base::UserMetricsAction;
 using content::OpenURLParams;
@@ -613,9 +614,11 @@ NSImage* Overlay(NSImage* ground, NSImage* overlay, CGFloat alpha) {
   NSInteger index = [self indexFromModelIndex:modelIndex];
   TabContentsController* controller = [tabContentsArray_ objectAtIndex:index];
 
+  // Make sure we do not draw any transient arrangements of views.
+  gfx::ScopedNSDisableScreenUpdates ns_disabler;
   // Make sure that any layers that move are not animated to their new
   // positions.
-  ScopedCAActionDisabler disabler;
+  ScopedCAActionDisabler ca_disabler;
 
   // Resize the new view to fit the window. Calling |view| may lazily
   // instantiate the TabContentsController from the nib. Until we call