Move nsimage_cache into base so that it can be accessed from outside of chrome

chrome/browser/cocoa/bookmark_menu_bridge.mm

 // 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.
 
 #import <AppKit/AppKit.h>
 
 #include "app/l10n_util.h"
+#include "base/nsimage_cache_mac.h"
 #include "base/sys_string_conversions.h"
 #include "chrome/app/chrome_dll_resource.h"  // IDC_BOOKMARK_MENU
 #import "chrome/browser/app_controller_mac.h"
 #include "chrome/browser/bookmarks/bookmark_model.h"
 #include "chrome/browser/browser.h"
 #include "chrome/browser/browser_list.h"
 #include "chrome/browser/cocoa/bookmark_menu_bridge.h"
 #import "chrome/browser/cocoa/bookmark_menu_cocoa_controller.h"
-#import "chrome/browser/cocoa/nsimage_cache.h"
 #include "chrome/browser/profile.h"
 #include "chrome/browser/profile_manager.h"
 #include "grit/generated_resources.h"
 #include "skia/ext/skia_utils_mac.h"
 
 BookmarkMenuBridge::BookmarkMenuBridge(Profile* profile)
     : profile_(profile),
       controller_([[BookmarkMenuCocoaController alloc] initWithBridge:this]) {
   if (GetBookmarkModel())
     ObserveBookmarkModel();
@@ skipping 192 matching lines @@
 
 NSMenuItem* BookmarkMenuBridge::MenuItemForNode(const BookmarkNode* node) {
   if (!node)
     return nil;
   std::map<const BookmarkNode*, NSMenuItem*>::iterator it =
       bookmark_nodes_.find(node);
   if (it == bookmark_nodes_.end())
     return nil;
   return it->second;
 }