Disable flaky test EditCommandsNoMenu

Test marked flaky by Try-Flakes.

Tbr: fsamuel@chromium.org
Bug: 859478
Change-Id: Ifa599ff89261cec4fa056f6868d8a544f5ec94fb
Reviewed-on: https://chromium-review.googlesource.com/1124039Reviewed-by: Luciano Pacheco <lucmult@chromium.org>
Commit-Queue: Luciano Pacheco <lucmult@chromium.org>
Cr-Commit-Position: refs/heads/master@{#572113}

chrome/browser/apps/guest_view/web_view_interactive_browsertest.cc

@@ -965,7 +965,8 @@ IN_PROC_BROWSER_TEST_F(WebViewInteractiveTest, EditCommands) {
 }
 
 // Tests that guests receive edit commands and respond appropriately.
-IN_PROC_BROWSER_TEST_F(WebViewInteractiveTest, EditCommandsNoMenu) {
+// Flaky test - crbug.com/859478
+IN_PROC_BROWSER_TEST_F(WebViewInteractiveTest, DISABLED_EditCommandsNoMenu) {
   SetupTest("web_view/edit_commands_no_menu",
       "/extensions/platform_apps/web_view/edit_commands_no_menu/"
       "guest.html");