Move nsimage_cache from base to app/mac. Use the app::mac namespace. Update c...

base/nsimage_cache_mac.h

-// Copyright (c) 2009 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.
-
-#ifndef BASE_NSIMAGE_CACHE_MAC_H_
-#define BASE_NSIMAGE_CACHE_MAC_H_
-#pragma once
-
-#ifdef __OBJC__
-@class NSImage;
-@class NSString;
-#else
-class NSImage;
-class NSString;
-#endif
-
-namespace nsimage_cache {
-
-// Returns an autoreleased image from the main app bundle
-// (mac_util::MainAppBundle()) with the given name, and keeps it in memory so
-// future fetches are fast.
-// NOTE:
-//   - This should only be called on the main thread.
-//   - The caller should retain the image if they want to keep it around, as
-//     the cache could have limit on size/lifetime, etc.
-NSImage* ImageNamed(NSString* name);
-
-// Clears the cache.
-void Clear(void);
-
-}  // namespace nsimage_cache
-
-#endif  // BASE_NSIMAGE_CACHE_MAC_H_