Added classes to enable session sync functionality.

chrome/test/browser_with_test_window_test.h

Index: chrome/test/browser_with_test_window_test.h
diff --git a/chrome/test/browser_with_test_window_test.h b/chrome/test/browser_with_test_window_test.h
index ae85634e630f363951cc568d9d0f4f2461b5609c..c57a2f9d1201af32686eac14c0f132a23271edbb 100644
--- a/chrome/test/browser_with_test_window_test.h
+++ b/chrome/test/browser_with_test_window_test.h
@@ -7,6 +7,7 @@
 #pragma once
 
 #include "base/message_loop.h"
+#include "chrome/browser/chrome_thread.h"
 #include "chrome/browser/renderer_host/test/test_render_view_host.h"
 #include "chrome/test/test_browser_window.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -86,8 +87,10 @@ class BrowserWithTestWindowTest : public testing::Test {
   void NavigateAndCommitActiveTab(const GURL& url);
 
  private:
+
   // We need to create a MessageLoop, otherwise a bunch of things fails.
   MessageLoopForUI ui_loop_;
+  ChromeThread ui_thread_;
 
   scoped_ptr<TestingProfile> profile_;
   scoped_ptr<TestBrowserWindow> window_;