Move StringToUpperASCII and LowerCaseEqualsASCII to the base namespace

components/plugins/renderer/mobile_youtube_plugin.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 "components/plugins/renderer/mobile_youtube_plugin.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/strings/string_piece.h"
 #include "base/strings/string_util.h"
@@ skipping 76 matching lines @@
 MobileYouTubePlugin::~MobileYouTubePlugin() {}
 
 // static
 bool MobileYouTubePlugin::IsYouTubeURL(const GURL& url,
                                        const std::string& mime_type) {
   std::string host = url.host();
   bool is_youtube = EndsWith(host, "youtube.com", true) ||
                     EndsWith(host, "youtube-nocookie.com", true);
 
   return is_youtube && IsValidYouTubeVideo(url.path()) &&
-         LowerCaseEqualsASCII(mime_type, content::kFlashPluginSwfMimeType);
+         base::LowerCaseEqualsASCII(mime_type,
+                                    content::kFlashPluginSwfMimeType);
 }
 
 void MobileYouTubePlugin::OpenYoutubeUrlCallback() {
   std::string youtube("vnd.youtube:");
   GURL url(youtube.append(GetYoutubeVideoId(GetPluginParams())));
   WebURLRequest request;
   request.initialize();
   request.setURL(url);
   render_frame()->LoadURLExternally(
       GetFrame(), request, blink::WebNavigationPolicyNewForegroundTab);
@@ skipping 11 matching lines @@
               gin::CreateHandle(isolate, this).ToV8());
 }
 
 gin::ObjectTemplateBuilder MobileYouTubePlugin::GetObjectTemplateBuilder(
     v8::Isolate* isolate) {
   return PluginPlaceholder::GetObjectTemplateBuilder(isolate)
     .SetMethod("openYoutubeURL", &MobileYouTubePlugin::OpenYoutubeUrlCallback);
 }
 
 }  // namespace plugins