app_list: Split app_list_controller.* into two smaller parts.

chrome/browser/ui/app_list/app_list_view_delegate.h

 // Copyright (c) 2012 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 CHROME_BROWSER_UI_APP_LIST_APP_LIST_VIEW_DELEGATE_H_
 #define CHROME_BROWSER_UI_APP_LIST_APP_LIST_VIEW_DELEGATE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
-#include "chrome/browser/ui/app_list/app_list_controller.h"
 #include "ui/app_list/app_list_view_delegate.h"
 
+class AppListControllerDelegate;
 class AppsModelBuilder;
 class SearchBuilder;
 
 #if defined(USE_ASH)
 class AppSyncUIStateWatcher;
 #endif
 
 class AppListViewDelegate : public app_list::AppListViewDelegate {
  public:
   // The delegate will take ownership of the controller.
@@ skipping 21 matching lines @@
   scoped_ptr<AppListControllerDelegate> controller_;
 
 #if defined(USE_ASH)
   scoped_ptr<AppSyncUIStateWatcher> app_sync_ui_state_watcher_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(AppListViewDelegate);
 };
 
 #endif  // CHROME_BROWSER_UI_APP_LIST_APP_LIST_VIEW_DELEGATE_H_