mac: Prepare most test code for -Wunused-functions too.

chrome/browser/drive/fake_drive_service.cc

 // 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.
 
 #include "chrome/browser/drive/fake_drive_service.h"
 
 #include <string>
 
 #include "base/file_util.h"
 #include "base/logging.h"
@@ skipping 87 matching lines @@
     // TODO(peria): Deal with other attributes than title.
     if (!key.empty() && key != "title")
       return false;
     // Search query in the title.
     if (entry.title().find(value) == std::string::npos)
       return false;
   }
   return true;
 }
 
-// Returns |url| without query parameter.
-GURL RemoveQueryParameter(const GURL& url) {
-  GURL::Replacements replacements;
-  replacements.ClearQuery();
-  return url.ReplaceComponents(replacements);
-}
-
 void ScheduleUploadRangeCallback(const UploadRangeCallback& callback,
                                  int64 start_position,
                                  int64 end_position,
                                  GDataErrorCode error,
                                  scoped_ptr<ResourceEntry> entry) {
   base::MessageLoop::current()->PostTask(
       FROM_HERE,
       base::Bind(callback,
                  UploadRangeResponse(error,
                                      start_position,
@@ skipping 1550 matching lines @@
       FROM_HERE,
       base::Bind(callback, HTTP_SUCCESS, base::Passed(&resource_list)));
 }
 
 GURL FakeDriveService::GetNewUploadSessionUrl() {
   return GURL("https://upload_session_url/" +
               base::Int64ToString(next_upload_sequence_number_++));
 }
 
 }  // namespace drive