Revert 257524 "Move IsStringASCII/UTF8 to base namespace."

trunk/src/content/renderer/renderer_webkitplatformsupport_impl.cc

Index: trunk/src/content/renderer/renderer_webkitplatformsupport_impl.cc
===================================================================
--- trunk/src/content/renderer/renderer_webkitplatformsupport_impl.cc	(revision 257532)
+++ trunk/src/content/renderer/renderer_webkitplatformsupport_impl.cc	(working copy)
@@ -405,7 +405,7 @@
     // Check whether the key system is supported with the mime_type and codecs.
 
     // Chromium only supports ASCII parameters.
-    if (!base::IsStringASCII(key_system))
+    if (!IsStringASCII(key_system))
       return IsNotSupported;
 
     std::string key_system_ascii =
@@ -467,8 +467,8 @@
     const WebString& mime_type,
     const WebString& codecs) {
   // Chromium only supports ASCII parameters.
-  if (!base::IsStringASCII(key_system) || !base::IsStringASCII(mime_type) ||
-      !base::IsStringASCII(codecs)) {
+  if (!IsStringASCII(key_system) || !IsStringASCII(mime_type) ||
+      !IsStringASCII(codecs)) {
     return false;
   }