Implement the webdriver window sizing commands.

chrome/test/webdriver/commands/chrome_commands.cc

 // Copyright (c) 2011 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/webdriver/commands/chrome_commands.h"
 
 #include <string>
 #include <vector>
 
 #include "base/file_path.h"
@@ skipping 228 matching lines @@
   std::vector<WebViewInfo> views;
   Error* error = session_->GetViews(&views);
   if (error) {
     response->SetError(error);
     return;
   }
   ListValue* views_list = new ListValue();
   for (size_t i = 0; i < views.size(); ++i) {
     DictionaryValue* dict = new DictionaryValue();
     AutomationId id = views[i].view_id.GetId();
-    dict->SetString("handle", JsonStringify(id.ToValue()));
+    dict->SetString("handle", WebViewIdToString(WebViewId::ForView(id)));
     dict->SetInteger("type", id.type());
     if (!views[i].extension_id.empty())
       dict->SetString("extension_id", views[i].extension_id);
     views_list->Append(dict);
   }
   response->SetValue(views_list);
 }
 
 }  // namespace webdriver