Convert LocationBar::GetInputString from wstring to string16.

chrome/browser/extensions/extension_omnibox_apitest.cc

 // Copyright (c) 2011 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 "base/format_macros.h"
 #include "base/string_util.h"
 #include "base/stringprintf.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/autocomplete/autocomplete.h"
 #include "chrome/browser/autocomplete/autocomplete_edit.h"
@@ skipping 91 matching lines @@
 
   // Test that our extension's keyword is suggested to us when we partially type
   // it.
   {
     autocomplete_controller->Start(
         ASCIIToUTF16("keywor"), string16(), true, false, true,
         AutocompleteInput::ALL_MATCHES);
 
     WaitForAutocompleteDone(autocomplete_controller);
     EXPECT_TRUE(autocomplete_controller->done());
-    EXPECT_EQ(std::wstring(), location_bar->GetInputString());
+    EXPECT_EQ(string16(), location_bar->GetInputString());
     EXPECT_EQ(string16(), location_bar->location_entry()->GetText());
     EXPECT_TRUE(location_bar->location_entry()->IsSelectAll());
 
     // First result should be to search for what was typed, second should be to
     // enter "extension keyword" mode.
     const AutocompleteResult& result = autocomplete_controller->result();
     ASSERT_EQ(2U, result.size()) << AutocompleteResultAsString(result);
     AutocompleteMatch match = result.match_at(0);
     EXPECT_EQ(AutocompleteMatch::SEARCH_WHAT_YOU_TYPED, match.type);
     EXPECT_FALSE(match.deletable);
@@ skipping 117 matching lines @@
   ResultCatcher catcher;
   autocomplete_controller->Start(
       ASCIIToUTF16("keyword command"), string16(), true, false, true,
       AutocompleteInput::ALL_MATCHES);
   location_bar->AcceptInput();
   WaitForAutocompleteDone(autocomplete_controller);
   EXPECT_TRUE(autocomplete_controller->done());
   EXPECT_TRUE(catcher.GetNextResult()) << catcher.message();
   EXPECT_FALSE(popup_model->IsOpen());
 }