Cleanup: Fix content header include guards.

content/public/browser/tracing_delegate.h

 // Copyright 2015 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_TRACING_TRACING_DELEGATE_H_
-#define CONTENT_BROWSER_TRACING_TRACING_DELEGATE_H_
+#ifndef CONTENT_PUBLIC_BROWSER_TRACING_DELEGATE_H_
+#define CONTENT_PUBLIC_BROWSER_TRACING_DELEGATE_H_
 
 #include "base/memory/scoped_ptr.h"
 
 namespace net {
 class URLRequestContextGetter;
 }
 
 namespace content {
 class TraceUploader;
 
 // This can be implemented by the embedder to provide functionality for the
 // about://tracing WebUI.
 class TracingDelegate {
  public:
   virtual ~TracingDelegate() {}
 
   // Provide trace uploading functionality; see trace_uploader.h.
   virtual scoped_ptr<TraceUploader> GetTraceUploader(
       net::URLRequestContextGetter* request_context) = 0;
 };
 
 }  // namespace content
 
-#endif  // CONTENT_BROWSER_TRACING_TRACING_DELEGATE_H_
+#endif  // CONTENT_PUBLIC_BROWSER_TRACING_DELEGATE_H_