Split ExtensionSystem interface from ExtensionSystemImpl implementation, part 1.

chrome/browser/extensions/extension_browsertest.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_EXTENSIONS_EXTENSION_BROWSERTEST_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_BROWSERTEST_H_
 
 #include <string>
 
 #include "base/command_line.h"
 
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
 #include "chrome/browser/extensions/extension_host.h"
-#include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/extensions/extension_test_notification_observer.h"
+#include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/common/extensions/features/feature_channel.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "content/public/browser/web_contents.h"
+#include "extensions/browser/extension_system.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/feature_switch.h"
 #include "extensions/common/manifest.h"
 
 class ExtensionService;
 class Profile;
 
 namespace extensions {
 class ExtensionCacheFake;
 class ExtensionSet;
@@ skipping 310 matching lines @@
       override_prompt_for_external_extensions_;
 
   // The default profile to be used.
   Profile* profile_;
 
   // Cache cache implementation.
   scoped_ptr<extensions::ExtensionCacheFake> test_extension_cache_;
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_BROWSERTEST_H_