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

ui/gfx/mac/nsimage_cache.mm

Index: ui/gfx/mac/nsimage_cache.mm
diff --git a/app/mac/nsimage_cache.mm b/ui/gfx/mac/nsimage_cache.mm
similarity index 92%
rename from app/mac/nsimage_cache.mm
rename to ui/gfx/mac/nsimage_cache.mm
index a399b74b21dc80958917c7d6c9b07a69cd4faf98..e7bb6e30e5f168f3a540cef20629654a02e4c0c3 100644
--- a/app/mac/nsimage_cache.mm
+++ b/ui/gfx/mac/nsimage_cache.mm
@@ -1,8 +1,8 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "app/mac/nsimage_cache.h"
+#include "ui/gfx/mac/nsimage_cache.h"
 
 #import <AppKit/AppKit.h>
 
@@ -18,8 +18,7 @@
 #undef try
 #undef catch
 
-namespace app {
-namespace mac {
+namespace gfx {
 
 static NSMutableDictionary* image_cache = nil;
 
@@ -71,5 +70,4 @@ void ClearCachedImages(void) {
   [image_cache removeAllObjects];
 }
 
-}  // namespace mac
-}  // namespace app
+}  // namespace gfx