Switch to standard integer types in chrome/browser/, part 2 of 4.

chrome/browser/media/router/issues_observer.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_MEDIA_ROUTER_ISSUES_OBSERVER_H_
 #define CHROME_BROWSER_MEDIA_ROUTER_ISSUES_OBSERVER_H_
 
+#include "base/macros.h"
 #include "chrome/browser/media/router/issue.h"
 
 namespace media_router {
 
 class MediaRouter;
 
 // Base class for observing Media Router Issue. There is at most one Issue
 // at any given time.
 class IssuesObserver {
  public:
   explicit IssuesObserver(MediaRouter* router);
   virtual ~IssuesObserver();
 
   void RegisterObserver();
   void UnregisterObserver();
 
   // Called when there is an updated Media Router Issue.
   // If |issue| is nullptr, then there is currently no issue.
   virtual void OnIssueUpdated(const Issue* issue) {}
 
  private:
   MediaRouter* router_;
 
   DISALLOW_COPY_AND_ASSIGN(IssuesObserver);
 };
 
 }  // namespace media_router
 
 #endif  // CHROME_BROWSER_MEDIA_ROUTER_ISSUES_OBSERVER_H_