Switch to standard integer types in chrome/browser/, part 4 of 4.

chrome/browser/tracing/navigation_tracing.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 CHROME_BROWSER_TRACING_NAVIGATION_TRACING_H_
 #define CHROME_BROWSER_TRACING_NAVIGATION_TRACING_H_
 
+#include "base/macros.h"
 #include "content/public/browser/background_tracing_manager.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_user_data.h"
 
 namespace tracing {
 
 void SetupNavigationTracing();
 
 class NavigationTracingObserver
     : public content::WebContentsObserver,
@@ skipping 16 matching lines @@
       bool is_iframe_srcdoc) override;
 
   static content::BackgroundTracingManager::TriggerHandle navigation_handle;
 
   DISALLOW_COPY_AND_ASSIGN(NavigationTracingObserver);
 };
 
 }  // namespace tracing
 
 #endif  // CHROME_BROWSER_TRACING_NAVIGATION_TRACING_H_