chrome: Instead of doing a conversion just use string16().

chrome/browser/ui/intents/web_intent_picker_controller.cc

 // Copyright (c) 2012 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 "chrome/browser/ui/intents/web_intent_picker_controller.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 165 matching lines @@
           ASCIIToUTF16("Simultaneous intent invocation."));
     }
     return;
   }
 
   // TODO(binji): Figure out what to do when intents are invoked from incognito
   // mode.
   if (wrapper_->profile()->IsOffTheRecord()) {
     if (intents_dispatcher_) {
       intents_dispatcher_->SendReplyMessage(
-          webkit_glue::WEB_INTENT_REPLY_FAILURE, ASCIIToUTF16(""));
+          webkit_glue::WEB_INTENT_REPLY_FAILURE, string16());
     }
     return;
   }
 
   picker_model_->Clear();
   picker_model_->set_action(action);
   picker_model_->set_mimetype(type);
 
   // If the intent is explicit, skip showing the picker.
   if (intents_dispatcher_) {
@@ skipping 460 matching lines @@
   // If picker is non-NULL, it was set by a test.
   if (picker_ == NULL)
     picker_ = WebIntentPicker::Create(wrapper_, this, picker_model_.get());
   picker_shown_ = true;
 }
 
 void WebIntentPickerController::ClosePicker() {
   if (picker_)
     picker_->Close();
 }