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

chrome/test/chromedriver/element_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/test/chromedriver/element_util.h"
 
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/threading/platform_thread.h"
@@ skipping 29 matching lines @@
     return false;
   double width, height;
   if (!dict_value->GetDouble("width", &width) ||
       !dict_value->GetDouble("height", &height))
     return false;
   size->width = static_cast<int>(width);
   size->height = static_cast<int>(height);
   return true;
 }
 
-base::Value* CreateValueFrom(const WebSize& size) {
-  base::DictionaryValue* dict = new base::DictionaryValue();
-  dict->SetInteger("width", size.width);
-  dict->SetInteger("height", size.height);
-  return dict;
-}
-
 bool ParseFromValue(base::Value* value, WebRect* rect) {
   base::DictionaryValue* dict_value;
   if (!value->GetAsDictionary(&dict_value))
     return false;
   double x, y, width, height;
   if (!dict_value->GetDouble("left", &x) ||
       !dict_value->GetDouble("top", &y) ||
       !dict_value->GetDouble("width", &width) ||
       !dict_value->GetDouble("height", &height))
     return false;
@@ skipping 572 matching lines @@
     status = ScrollElementRegionIntoViewHelper(
         rit->parent_frame_id, web_view, frame_element_id,
         WebRect(region_offset, region_size),
         center, frame_element_id, &region_offset);
     if (status.IsError())
       return status;
   }
   *location = region_offset;
   return Status(kOk);
 }