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

trunk/src/content/renderer/media/webcontentdecryptionmodule_impl.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 "content/renderer/media/webcontentdecryptionmodule_impl.h"
 
 #include <map>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/renderer/media/cdm_session_adapter.h"
 #include "content/renderer/media/webcontentdecryptionmodulesession_impl.h"
 #include "media/base/media_keys.h"
 
 #if defined(ENABLE_PEPPER_CDMS)
 #include "content/renderer/media/crypto/pepper_cdm_wrapper_impl.h"
 #endif
 
 namespace content {
 
 WebContentDecryptionModuleImpl* WebContentDecryptionModuleImpl::Create(
     const base::string16& key_system) {
   // TODO(ddorwin): Guard against this in supported types check and remove this.
   // Chromium only supports ASCII key systems.
-  if (!base::IsStringASCII(key_system)) {
+  if (!IsStringASCII(key_system)) {
     NOTREACHED();
     return NULL;
   }
 
   scoped_refptr<CdmSessionAdapter> adapter(new CdmSessionAdapter());
   if (!adapter->Initialize(
 #if defined(ENABLE_PEPPER_CDMS)
           // TODO(jrummell): Figure out how to get a WebFrame from Blink (or
           // something equivalent) so the plugin can actually get created.
           // http://crbug.com/250049
@@ skipping 20 matching lines @@
 WebContentDecryptionModuleImpl::createSession(
     blink::WebContentDecryptionModuleSession::Client* client) {
   return adapter_->CreateSession(client);
 }
 
 media::Decryptor* WebContentDecryptionModuleImpl::GetDecryptor() {
   return adapter_->GetDecryptor();
 }
 
 }  // namespace content