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

chrome/browser/cocoa/tab_controller.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.
 
 #include "base/mac_util.h"
-#include "chrome/browser/cocoa/nsimage_cache.h"
 #import "chrome/browser/cocoa/tab_controller.h"
 #import "chrome/browser/cocoa/tab_controller_target.h"
 #import "chrome/browser/cocoa/tab_view.h"
 #import "third_party/GTM/AppKit/GTMTheme.h"
 
 @interface TabController(Private)
 - (void)updateVisibility;
 @end
 
 @implementation TabController
@@ skipping 224 matching lines @@
 // Called by the tabs to determine whether we are in rapid (tab) closure mode.
 - (BOOL)inRapidClosureMode {
   if ([[self target] respondsToSelector:@selector(inRapidClosureMode)]) {
     return [[self target] performSelector:@selector(inRapidClosureMode)] ?
         YES : NO;
   }
   return NO;
 }
 
 @end