Add FilePath setter/getter to pref service....

chrome/browser/tab_contents/web_contents_unittest.cc

 // Copyright (c) 2006-2008 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/logging.h"
 #include "chrome/browser/renderer_host/render_view_host.h"
 #include "chrome/browser/renderer_host/render_widget_host_view.h"
 #include "chrome/browser/renderer_host/test_render_view_host.h"
 #include "chrome/browser/tab_contents/interstitial_page.h"
 #include "chrome/browser/tab_contents/navigation_controller.h"
@@ skipping 24 matching lines @@
   params->is_post = false;
 }
 
 // Subclass the TestingProfile so that it can return certain services we need.
 class WebContentsTestingProfile : public TestingProfile {
  public:
   WebContentsTestingProfile() : TestingProfile() { }
 
   virtual PrefService* GetPrefs() {
     if (!prefs_.get()) {
-      std::wstring source_path;
+      FilePath source_path;
       PathService::Get(chrome::DIR_TEST_DATA, &source_path);
-      file_util::AppendToPath(&source_path, L"profiles");
-      file_util::AppendToPath(&source_path, L"chrome_prefs");
-      file_util::AppendToPath(&source_path, L"Preferences");
+      source_path = source_path.AppendASCII("profiles")
+          .AppendASCII("chrome_prefs").AppendASCII("Preferences");
 
       prefs_.reset(new PrefService(source_path));
       Profile::RegisterUserPrefs(prefs_.get());
       browser::RegisterAllPrefs(prefs_.get(), prefs_.get());
     }
     return prefs_.get();
   }
 };
 
 class TestInterstitialPage : public InterstitialPage {
@@ skipping 981 matching lines @@
   interstitial =
       new TestInterstitialPage(contents(), true, url, &state, &deleted);
   interstitial->Show();
   interstitial->TestDidNavigate(1, url);
   // Simulate a renderer crash.
   interstitial->TestRenderViewGone();
   // The interstitial should have been dismissed.
   EXPECT_TRUE(deleted);
   EXPECT_EQ(TestInterstitialPage::CANCELED, state);
 }