Mark AutocompleteBrowserTest.FocusSearch flaky on Windows and Linux. (reland)

chrome/browser/autocomplete/autocomplete_browsertest.cc

Index: chrome/browser/autocomplete/autocomplete_browsertest.cc
diff --git a/chrome/browser/autocomplete/autocomplete_browsertest.cc b/chrome/browser/autocomplete/autocomplete_browsertest.cc
index ae1cce8355bcb6283e765329acfbeb73ef73647c..56a0cafff54961ef9f05dd310f64ad59f437580a 100644
--- a/chrome/browser/autocomplete/autocomplete_browsertest.cc
+++ b/chrome/browser/autocomplete/autocomplete_browsertest.cc
@@ -170,7 +170,13 @@ IN_PROC_BROWSER_TEST_F(AutocompleteBrowserTest, TabAwayRevertSelect) {
   EXPECT_TRUE(location_bar->location_entry()->IsSelectAll());
 }
 
-IN_PROC_BROWSER_TEST_F(AutocompleteBrowserTest, FocusSearch) {
+#if defined(OS_WIN) || defined(OS_LINUX)
+// http://crbug.com/104307
+#define MAYBE_FocusSearch FLAKY_FocusSearch
+#else
+#define MAYBE_FocusSearch FocusSearch
+#endif
+IN_PROC_BROWSER_TEST_F(AutocompleteBrowserTest, MAYBE_FocusSearch) {
   LocationBar* location_bar = GetLocationBar();
 
   // Focus search when omnibox is blank