Enable ChromeFrame net tests for IE versions 8 and below. Changes include the following:-

base/test/test_suite.h

 // 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.
 
 #ifndef BASE_TEST_TEST_SUITE_H_
 #define BASE_TEST_TEST_SUITE_H_
 #pragma once
 
 // Defines a basic test suite framework for running gtest based tests.  You can
 // instantiate this class in your main function and call its Run method to run
 // any gtest based tests that are linked into your executable.
 
 #include <string>
 
 #include "base/at_exit.h"
+#include "base/memory/scoped_ptr.h"
 
 namespace testing {
 class TestInfo;
 }
 
 namespace base {
 
 class TestSuite {
  public:
   // Match function used by the GetTestCount method.
@@ skipping 26 matching lines @@
 
   void ResetCommandLine();
 
   int Run();
 
   // A command-line flag that makes a test failure always result in a non-zero
   // process exit code.
   static const char kStrictFailureHandling[];
 
  protected:
+  // This constructor is only accessible to specialized test suite
+  // implementations which need to control the creation of an AtExitManager
+  // instance for the duration of the test.
+  TestSuite(int argc, char** argv, bool create_at_exit_manager);
+
   // By default fatal log messages (e.g. from DCHECKs) result in error dialogs
   // which gum up buildbots. Use a minimalistic assert handler which just
   // terminates the process.
   static void UnitTestAssertHandler(const std::string& str);
 
   // Disable crash dialogs so that it doesn't gum up the buildbot
   virtual void SuppressErrorDialogs();
 
   // Override these for custom initialization and shutdown handling.  Use these
   // instead of putting complex code in your constructor/destructor.
 
   virtual void Initialize();
   virtual void Shutdown();
 
   // Make sure that we setup an AtExitManager so Singleton objects will be
   // destroyed.
-  base::AtExitManager at_exit_manager_;
+  scoped_ptr<base::AtExitManager> at_exit_manager_;
+
+ private:
+  // Basic initialization for the test suite happens here.
+  void PreInitialize(int argc, char** argv, bool create_at_exit_manager);
 
   DISALLOW_COPY_AND_ASSIGN(TestSuite);
 };
 
 }  // namespace base
 
 // TODO(brettw) remove this. This is a temporary hack to allow WebKit to compile
 // until we can update it to use "base::" (preventing a two-sided patch).
 using base::TestSuite;
 
 #endif  // BASE_TEST_TEST_SUITE_H_