Moving chrome://tracing to content.

content/browser/tracing/tracing_ui.h

 // Copyright (c) 2011 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_WEBUI_TRACING_UI_H_
-#define CHROME_BROWSER_UI_WEBUI_TRACING_UI_H_
+#ifndef CONTENT_BROWSER_TRACING_UI_H_
+#define CONTENT_BROWSER_TRACING_UI_H_
 
 #include "content/public/browser/web_ui_controller.h"
 
+namespace content {
+
 // The C++ back-end for the chrome://tracing webui page.
-class TracingUI : public content::WebUIController {
+class TracingUI : public WebUIController {
  public:
-  explicit TracingUI(content::WebUI* web_ui);
+  explicit TracingUI(WebUI* web_ui);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(TracingUI);
 };
 
-#endif  // CHROME_BROWSER_UI_WEBUI_TRACING_UI_H_
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_TRACING_UI_H_