Update uses of UTF conversions in chrome_frame/, chromeos/, components/ to use the base:: namespace.

components/plugins/renderer/plugin_placeholder.cc

Index: components/plugins/renderer/plugin_placeholder.cc
diff --git a/components/plugins/renderer/plugin_placeholder.cc b/components/plugins/renderer/plugin_placeholder.cc
index df85dd562bd181041fd12c095143e0a83406458a..405ac86d0946f033910478085da4ea75a8b74647 100644
--- a/components/plugins/renderer/plugin_placeholder.cc
+++ b/components/plugins/renderer/plugin_placeholder.cc
@@ -164,7 +164,7 @@ void PluginPlaceholder::UpdateMessage() {
   std::string script =
       "window.setMessage(" + base::GetQuotedJSONString(message_) + ")";
   plugin_->web_view()->mainFrame()->executeScript(
-      WebScriptSource(ASCIIToUTF16(script)));
+      WebScriptSource(base::ASCIIToUTF16(script)));
 }
 
 void PluginPlaceholder::ShowContextMenu(const WebMouseEvent& event) {