Move navigation and frame tree classes to a new frame_host/ directory.

content/browser/frame_host/navigation_controller_impl.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 CONTENT_BROWSER_WEB_CONTENTS_NAVIGATION_CONTROLLER_IMPL_H_
-#define CONTENT_BROWSER_WEB_CONTENTS_NAVIGATION_CONTROLLER_IMPL_H_
+#ifndef CONTENT_BROWSER_FRAME_HOST_NAVIGATION_CONTROLLER_IMPL_H_
+#define CONTENT_BROWSER_FRAME_HOST_NAVIGATION_CONTROLLER_IMPL_H_
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/linked_ptr.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
+#include "content/browser/frame_host/navigation_controller_delegate.h"
 #include "content/browser/ssl/ssl_manager.h"
-#include "content/browser/web_contents/navigation_controller_delegate.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/navigation_type.h"
 
 struct ViewHostMsg_FrameNavigate_Params;
 
 namespace content {
 class NavigationEntryImpl;
 class RenderViewHost;
 class WebContentsScreenshotManager;
 class SiteInstance;
@@ skipping 374 matching lines @@
   // the wrong order in the history view.
   TimeSmoother time_smoother_;
 
   scoped_ptr<WebContentsScreenshotManager> screenshot_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(NavigationControllerImpl);
 };
 
 }  // namespace content
 
-#endif  // CONTENT_BROWSER_WEB_CONTENTS_NAVIGATION_CONTROLLER_IMPL_H_
+#endif  // CONTENT_BROWSER_FRAME_HOST_NAVIGATION_CONTROLLER_IMPL_H_