Disable LauncherPageFocusTraversal browser test on all platforms.

chrome/browser/apps/custom_launcher_page_browsertest_views.cc

Index: chrome/browser/apps/custom_launcher_page_browsertest_views.cc
diff --git a/chrome/browser/apps/custom_launcher_page_browsertest_views.cc b/chrome/browser/apps/custom_launcher_page_browsertest_views.cc
index 00e34840152f687f989d7e66c37ed471b24543ae..485fe6dc4763df9e5d6d557028bdb9585e22b43b 100644
--- a/chrome/browser/apps/custom_launcher_page_browsertest_views.cc
+++ b/chrome/browser/apps/custom_launcher_page_browsertest_views.cc
@@ -387,16 +387,10 @@ IN_PROC_BROWSER_TEST_F(CustomLauncherPageBrowserTest, LauncherPageSetEnabled) {
   EXPECT_TRUE(custom_page_view->visible());
 }
 
-// Currently this fails on ChromeOS
+// Currently this is flaky.
 // Disabled test http://crbug.com/463456
-#if defined(OS_CHROMEOS)
-#define MAYBE_LauncherPageFocusTraversal DISABLED_LauncherPageFocusTraversal
-#else
-#define MAYBE_LauncherPageFocusTraversal LauncherPageFocusTraversal
-#endif
-
 IN_PROC_BROWSER_TEST_F(CustomLauncherPageBrowserTest,
-                       MAYBE_LauncherPageFocusTraversal) {
+                       DISABLED_LauncherPageFocusTraversal) {
   LoadAndLaunchPlatformApp(kCustomLauncherPagePath, "Launched");
   app_list::AppListView* app_list_view = GetAppListView();
   app_list::ContentsView* contents_view =