Reduce flakiness in chrome_frame_tests.exe by having each run in a clean environment.

chrome_frame/test/ui_test.cc

 // Copyright (c) 2012 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 <mshtmcid.h>
 #include <string>
 
 #include "base/test/test_file_util.h"
 #include "base/utf_string_conversions.h"
 #include "base/win/scoped_bstr.h"
@@ skipping 785 matching lines @@
   // Verify that text field is empty after cut operation.
   EXPECT_CALL(acc_observer_, OnAccValueChange(_, _, StrEq(L"")))
       .WillOnce(CloseBrowserMock(&ie_mock_));
 
   LaunchIEAndNavigate(context_menu_page_url);
   // Verify that the text value has been cut to clipboard.
   EXPECT_STREQ(kTextFieldInitValue.c_str(), GetClipboardText().c_str());
 }
 
 // Test CF text field context menu - copy.
-// FLAKY: 114386.
-TEST_F(ContextMenuTest, DISABLED_CFTxtFieldCopy) {
+TEST_F(ContextMenuTest, CFTxtFieldCopy) {
   server_mock_.ExpectAndServeAnyRequests(CFInvocation::MetaTag());
   AccObjectMatcher txtfield_matcher(L"", L"editable text");
 
   // Invoke "Copy" context menu item of text field.
   EXPECT_CALL(acc_observer_,
               OnAccDocLoad(TabContentsTitleEq(context_menu_page_title)))
       .WillOnce(testing::DoAll(
           AccRightClick(txtfield_matcher),
           AccWatchForOneValueChange(&acc_observer_, txtfield_matcher)));
   EXPECT_CALL(acc_observer_, OnMenuPopup(_))
@@ skipping 205 matching lines @@
       .WillOnce(AccLeftClick(AccObjectMatcher(L"Forward")));
 
   EXPECT_CALL(ie_mock_, OnLoad(IN_CF, StrEq(page3)))
       .WillOnce(CloseBrowserMock(&ie_mock_));
 
   LaunchIENavigateAndLoop(page1,
                           kChromeFrameVeryLongNavigationTimeoutInSeconds);
 }
 
 }  // namespace chrome_frame_test