Random clean up around Chrome OS file manager code.

chrome/browser/chromeos/file_manager/drive_test_util.cc

 // Copyright (c) 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.
 
 #include "chrome/browser/chromeos/file_manager/drive_test_util.h"
 
-#include "base/files/file_path.h"
 #include "base/run_loop.h"
 #include "chrome/browser/chromeos/drive/drive_integration_service.h"
-#include "chrome/browser/profiles/profile.h"
-#include "content/public/browser/browser_context.h"
-#include "webkit/browser/fileapi/external_mount_points.h"
 
 namespace file_manager {
 namespace test_util {
 
 namespace {
 
 // Helper class used to wait for |OnFileSystemMounted| event from a drive file
 // system.
 class DriveMountPointWaiter : public drive::DriveIntegrationServiceObserver {
  public:
@@ skipping 45 matching lines @@
     return;
 
   DriveMountPointWaiter mount_point_waiter(integration_service);
   VLOG(1) << "Waiting for drive mount point to get mounted.";
   mount_point_waiter.Wait();
   VLOG(1) << "Drive mount point found.";
 }
 
 }  // namespace test_util
 }  // namespace file_manager