Disable flaky ShelfAppBrowserTest_ActivationStateCheck.

chrome/browser/ui/ash/launcher/chrome_launcher_controller_impl_browsertest.cc

Index: chrome/browser/ui/ash/launcher/chrome_launcher_controller_impl_browsertest.cc
diff --git a/chrome/browser/ui/ash/launcher/chrome_launcher_controller_impl_browsertest.cc b/chrome/browser/ui/ash/launcher/chrome_launcher_controller_impl_browsertest.cc
index ca9f3bdac94a05b96e1247d27a2e53de192e231d..623ca2d01fe387b17e8339cc8b85e49be6551e6a 100644
--- a/chrome/browser/ui/ash/launcher/chrome_launcher_controller_impl_browsertest.cc
+++ b/chrome/browser/ui/ash/launcher/chrome_launcher_controller_impl_browsertest.cc
@@ -1202,7 +1202,7 @@ IN_PROC_BROWSER_TEST_F(ShelfAppBrowserTest, RefocusFilterLaunch) {
 }
 
 // Check the launcher activation state for applications and browser.
-IN_PROC_BROWSER_TEST_F(ShelfAppBrowserTest, ActivationStateCheck) {
+IN_PROC_BROWSER_TEST_F(ShelfAppBrowserTest, DISABLED_ActivationStateCheck) {
   TabStripModel* tab_strip = browser()->tab_strip_model();
   // Get the browser item index
   int browser_index = GetIndexOfShelfItemType(ash::TYPE_BROWSER_SHORTCUT);