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

chrome/browser/download/download_browsertest.h

 // Copyright 2013 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_BROWSERTEST_H_
 #define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_BROWSERTEST_H_
 
-#include "base/basictypes.h"
+#include <stddef.h>
+
+#include "base/macros.h"
 #include "content/public/test/download_test_observer.h"
 
 // DownloadTestObserver subclass that observes a download until it transitions
 // from IN_PROGRESS to another state, but only after StartObserving() is called.
 class DownloadTestObserverNotInProgress : public content::DownloadTestObserver {
  public:
   DownloadTestObserverNotInProgress(content::DownloadManager* download_manager,
                                     size_t count);
   ~DownloadTestObserverNotInProgress() override;
 
   void StartObserving();
 
  private:
   bool IsDownloadInFinalState(content::DownloadItem* download) override;
 
   bool started_observing_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadTestObserverNotInProgress);
 };
 
 #endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_BROWSERTEST_H_