Re-try r29078: Remove some deprecated file_util wstring functions.

chrome_frame/test_utils.cc

 // Copyright (c) 2009 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_frame/test_utils.h"
 
 #include <atlbase.h>
 #include <atlwin.h>
 
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "chrome/common/chrome_paths.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 // Statics
 
-std::wstring ScopedChromeFrameRegistrar::GetChromeFrameBuildPath() {
-  std::wstring build_path;
+FilePath ScopedChromeFrameRegistrar::GetChromeFrameBuildPath() {
+  FilePath build_path;
   PathService::Get(chrome::DIR_APP, &build_path);
-  file_util::AppendToPath(&build_path, L"servers\\npchrome_tab.dll");
+  build_path = build_path.Append(L"servers").
+                          Append(L"npchrome_tab.dll");
   file_util::PathExists(build_path);
   return build_path;
 }
 
 void ScopedChromeFrameRegistrar::RegisterDefaults() {
-  std::wstring dll_path_ = GetChromeFrameBuildPath();
-  RegisterAtPath(dll_path_);
+  FilePath dll_path = GetChromeFrameBuildPath();
+  RegisterAtPath(dll_path.value());
 }
 
 void ScopedChromeFrameRegistrar::RegisterAtPath(
     const std::wstring& path) {
 
   ASSERT_FALSE(path.empty());
   HMODULE chrome_frame_dll_handle = LoadLibrary(path.c_str());
   ASSERT_TRUE(chrome_frame_dll_handle != NULL);
 
   typedef HRESULT (STDAPICALLTYPE* DllRegisterServerFn)();
@@ skipping 10 matching lines @@
 
   if (register_npapi_server != NULL)
     EXPECT_HRESULT_SUCCEEDED((*register_npapi_server)());
 
   ASSERT_TRUE(FreeLibrary(chrome_frame_dll_handle));
 }
 
 // Non-statics
 
 ScopedChromeFrameRegistrar::ScopedChromeFrameRegistrar() {
-  original_dll_path_ = GetChromeFrameBuildPath();
+  original_dll_path_ = GetChromeFrameBuildPath().ToWStringHack();
   RegisterChromeFrameAtPath(original_dll_path_);
 }
 
 ScopedChromeFrameRegistrar::~ScopedChromeFrameRegistrar() {
   if (FilePath(original_dll_path_) != FilePath(new_chrome_frame_dll_path_)) {
     RegisterChromeFrameAtPath(original_dll_path_);
   }
 }
 
 void ScopedChromeFrameRegistrar::RegisterChromeFrameAtPath(
@@ skipping 16 matching lines @@
   file_util::AppendToPath(&reference_build_dir, L"chrome");
   file_util::AppendToPath(&reference_build_dir, L"servers");
   file_util::AppendToPath(&reference_build_dir, L"npchrome_tab.dll");
 
   RegisterChromeFrameAtPath(reference_build_dir);
 }
 
 std::wstring ScopedChromeFrameRegistrar::GetChromeFrameDllPath() const {
   return new_chrome_frame_dll_path_;
 }