Move app/mac/ files to ui/gfx/mac/ directory.

chrome/browser/ui/cocoa/notifications/balloon_controller.mm

Index: chrome/browser/ui/cocoa/notifications/balloon_controller.mm
diff --git a/chrome/browser/ui/cocoa/notifications/balloon_controller.mm b/chrome/browser/ui/cocoa/notifications/balloon_controller.mm
index dec0b9032601b31a264c224d301609a704e6abdf..b45838da2efb2f18af0790e4968434e3954d34dd 100644
--- a/chrome/browser/ui/cocoa/notifications/balloon_controller.mm
+++ b/chrome/browser/ui/cocoa/notifications/balloon_controller.mm
@@ -4,7 +4,6 @@
 
 #include "chrome/browser/ui/cocoa/notifications/balloon_controller.h"
 
-#include "app/mac/nsimage_cache.h"
 #import "base/mac/cocoa_protocols.h"
 #include "base/mac/mac_util.h"
 #import "base/memory/scoped_nsobject.h"
@@ -24,6 +23,7 @@
 #include "grit/theme_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
+#include "ui/gfx/mac/nsimage_cache.h"
 
 namespace {
 
@@ -60,7 +60,7 @@ const int kRightMargin = 2;
   DCHECK([self window]);
   DCHECK_EQ(self, [[self window] delegate]);
 
-  NSImage* image = app::mac::GetCachedImageWithName(@"balloon_wrench.pdf");
+  NSImage* image = gfx::GetCachedImageWithName(@"balloon_wrench.pdf");
   [optionsButton_ setDefaultImage:image];
   [optionsButton_ setDefaultOpacity:0.6];
   [optionsButton_ setHoverImage:image];