Marking ExtensionApiTest.WebNavigationSimpleLoad as flaky on windows xp.

chrome/browser/extensions/extension_webnavigation_apitest.cc

Index: chrome/browser/extensions/extension_webnavigation_apitest.cc
diff --git a/chrome/browser/extensions/extension_webnavigation_apitest.cc b/chrome/browser/extensions/extension_webnavigation_apitest.cc
index 3fbf82b4f9a658b8c0a0ae36ae22d494ef3d1565..6ef3f487da4b9d55b0c532b36aed7bd2bdd598a2 100644
--- a/chrome/browser/extensions/extension_webnavigation_apitest.cc
+++ b/chrome/browser/extensions/extension_webnavigation_apitest.cc
@@ -128,7 +128,14 @@ IN_PROC_BROWSER_TEST_F(ExtensionApiTest, WebNavigationReferenceFragment) {
           << message_;
 }
 
-IN_PROC_BROWSER_TEST_F(ExtensionApiTest, WebNavigationSimpleLoad) {
+#if defined(OS_WIN)
+// Marking this test flaky on Windows: http://crbug.com/116842
+#define MAYBE_WebNavigationSimpleLoad FLAKY_WebNavigationSimpleLoad
+#else
+#define MAYBE_WebNavigationSimpleLoad WebNavigationSimpleLoad
+#endif
+
+IN_PROC_BROWSER_TEST_F(ExtensionApiTest, MAYBE_WebNavigationSimpleLoad) {
   FrameNavigationState::set_allow_extension_scheme(true);
 
   CommandLine::ForCurrentProcess()->AppendSwitch(