Split ExtensionSystem interface from ExtensionSystemImpl implementation, part 1.

chrome/browser/extensions/api/tab_capture/tab_capture_registry.cc

 // 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.
 
 #include "chrome/browser/extensions/api/tab_capture/tab_capture_registry.h"
 
 #include "base/lazy_instance.h"
 #include "chrome/browser/chrome_notification_types.h"
-#include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/fullscreen/fullscreen_controller.h"
 #include "components/browser_context_keyed_service/browser_context_dependency_manager.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "extensions/browser/event_router.h"
+#include "extensions/browser/extension_system.h"
 #include "extensions/common/extension.h"
 
 using content::BrowserThread;
 using extensions::TabCaptureRegistry;
 using extensions::tab_capture::TabCaptureState;
 
 namespace extensions {
 
 namespace tab_capture = api::tab_capture;
 
@@ skipping 322 matching lines @@
        it != requests_.end(); ++it) {
     if ((*it)->render_process_id == render_process_id &&
         (*it)->render_view_id == render_view_id) {
       requests_.erase(it);
       return;
     }
   }
 }
 
 }  // namespace extensions