Fix the ChromeFrame FullTabModeIE_TestDownloadFromForm test flakiness on IE9....

chrome_frame/test/test_with_web_server.cc

 // Copyright (c) 2010 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/test_with_web_server.h"
 
 #include "base/base_paths.h"
 #include "base/file_version_info.h"
 #include "base/path_service.h"
 #include "base/stringprintf.h"
@@ skipping 1222 matching lines @@
       return get_requests_;
     }
 
    protected:
     mutable bool is_post_;
     size_t post_requests_;
     size_t get_requests_;
   };
 
   EXPECT_CALL(win_observer_mock, OnWindowOpen(_))
+      .Times(testing::AtMost(1))
       .WillOnce(chrome_frame_test::DoCloseWindow());
 
   EXPECT_CALL(win_observer_mock, OnWindowClose(_))
+      .Times(testing::AtMost(1))
       .WillOnce(QUIT_LOOP(loop_));
 
   SimpleWebServerTest server(46664);
   CustomResponse* response = new CustomResponse("/form.html");
   server.web_server()->AddResponse(response);
 
   std::wstring url(server.FormatHttpPath(L"form.html"));
 
   ASSERT_TRUE(LaunchBrowser(IE, url.c_str()));
   loop_.RunFor(kChromeFrameLongNavigationTimeoutInSeconds);
 
   EXPECT_EQ(1, response->get_request_count());
   EXPECT_EQ(1, response->post_request_count());
 }