WebUI: add global "locale" key to loadTimeData in many cases

ui/base/webui/web_ui_util.cc

 // 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.
 
 #include "ui/base/webui/web_ui_util.h"
 
 #include <vector>
 
 #include "base/base64.h"
 #include "base/i18n/rtl.h"
@@ skipping 102 matching lines @@
     if (scale_factor)
       *scale_factor = factor;
   }
 }
 
 void SetLoadTimeDataDefaults(const std::string& app_locale,
                              base::DictionaryValue* localized_strings) {
   localized_strings->SetString("fontfamily", GetFontFamily());
   localized_strings->SetString("fontsize", GetFontSize());
   localized_strings->SetString("language", l10n_util::GetLanguage(app_locale));
+  localized_strings->SetString("locale", app_locale);
   localized_strings->SetString("textdirection", GetTextDirection());
 }
 
 std::string GetWebUiCssTextDefaults(const std::string& css_template) {
   ui::TemplateReplacements placeholders;
   placeholders["textDirection"] = GetTextDirection();
   placeholders["fontFamily"] = GetFontFamily();
   placeholders["fontSize"] = GetFontSize();
   return ui::ReplaceTemplateExpressions(css_template, placeholders);
 }
@@ skipping 47 matching lines @@
           IDS_WEB_FONT_SIZE_XP :
 #endif
           IDS_WEB_FONT_SIZE);
 }
 
 std::string GetTextDirection() {
   return base::i18n::IsRTL() ? "rtl" : "ltr";
 }
 
 }  // namespace webui