Switch to standard integer types in chrome/browser/, part 1 of 4.

chrome/browser/download/download_shelf.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 CHROME_BROWSER_DOWNLOAD_DOWNLOAD_SHELF_H_
 #define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_SHELF_H_
 
+#include <stdint.h>
+
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
 
 class Browser;
 
 namespace base {
 class TimeTicks;
 }
 
@@ skipping 113 matching lines @@
   virtual content::DownloadManager* GetDownloadManager();
 
  private:
   // Show the download on the shelf immediately. Also displayes the download
   // started animation if necessary.
   void ShowDownload(content::DownloadItem* download);
 
   // Similar to ShowDownload() but refers to the download using an ID. This
   // download should belong to the DownloadManager returned by
   // GetDownloadManager().
-  void ShowDownloadById(int32 download_id);
+  void ShowDownloadById(int32_t download_id);
 
   bool should_show_on_unhide_;
   bool is_hidden_;
   base::WeakPtrFactory<DownloadShelf> weak_ptr_factory_;
 };
 
 #endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_SHELF_H_