Disable flaky AppBannerManagerBrowserTest.WebAppBannerCreatedIndirectLargerTotal.

chrome/browser/banners/app_banner_manager_browsertest.cc

Index: chrome/browser/banners/app_banner_manager_browsertest.cc
diff --git a/chrome/browser/banners/app_banner_manager_browsertest.cc b/chrome/browser/banners/app_banner_manager_browsertest.cc
index 3db23e96bee769cf854a1594e671eb4d505af81d..abf2864cd8286e8dfd75ebfc8d408011e6161ac6 100644
--- a/chrome/browser/banners/app_banner_manager_browsertest.cc
+++ b/chrome/browser/banners/app_banner_manager_browsertest.cc
@@ -236,8 +236,9 @@ IN_PROC_BROWSER_TEST_F(AppBannerManagerBrowserTest,
                 SHOWING_WEB_APP_BANNER, true);
 }
 
+// Flaky http://crbug.com/660798
 IN_PROC_BROWSER_TEST_F(AppBannerManagerBrowserTest,
-                       WebAppBannerCreatedIndirectLargerTotal) {
+                       DISABLED_WebAppBannerCreatedIndirectLargerTotal) {
   AppBannerSettingsHelper::SetTotalEngagementToTrigger(5);
   RunBannerTest("/banners/manifest_test_page.html", ui::PAGE_TRANSITION_LINK, 4,
                 SHOWING_WEB_APP_BANNER, true);