Add base:: to string16s in win8/.

win8/test/metro_registration_helper.cc

 // Copyright (c) 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 "win8/test/metro_registration_helper.h"
 
 #include <shlobj.h>
 
 #include <vector>
 
@@ skipping 80 matching lines @@
   }
 
   base::win::ScopedCoMem<wchar_t> current_app;
   hr = registration->QueryCurrentDefault(protocol, AT_URLPROTOCOL,
                                          AL_EFFECTIVE, &current_app);
   if (FAILED(hr)) {
     LOG(ERROR) << std::hex << hr;
     return false;
   }
 
-  return string16(win8::test::kDefaultTestProgId).compare(current_app) == 0;
+  return !base::string16(win8::test::kDefaultTestProgId).compare(current_app);
 }
 
 }  // namespace
 
 namespace win8 {
 
 bool MakeTestDefaultBrowserSynchronously() {
   static const wchar_t kDefaultBrowserProtocol[] = L"http";
 
   if (!RegisterTestDefaultBrowser())
@@ skipping 12 matching lines @@
   std::vector<base::string16> choices;
   OpenWithDialogController controller;
   HRESULT hr = controller.RunSynchronously(
       NULL, kDefaultBrowserProtocol, win8::test::kDefaultTestExeName, &choices);
   LOG_IF(ERROR, FAILED(hr)) << std::hex << hr;
   DCHECK(IsTestDefaultForProtocol(kDefaultBrowserProtocol));
   return SUCCEEDED(hr);
 }
 
 }  // namespace win8