Disable PasswordGenerationInteractiveTest.AutoSavingGeneratedPassword.

Flake examples:
https://uberchromegw.corp.google.com/i/chromium.mac/builders/Mac10.9%20Tests/builds/51019
https://uberchromegw.corp.google.com/i/chromium.mac/builders/Mac10.9%20Tests/builds/51016
https://uberchromegw.corp.google.com/i/chromium.chromiumos/builders/linux-chromeos-rel/builds/3170

TBR=mkwst@chromium.org

Bug: 791389
Change-Id: I23a57c249151746ba07b70f36ee7aa4ee8da0aeb
Reviewed-on: https://chromium-review.googlesource.com/804905
Commit-Queue: calamity <calamity@chromium.org>
Reviewed-by: calamity <calamity@chromium.org>
Cr-Commit-Position: refs/heads/master@{#521270}

chrome/browser/password_manager/password_generation_interactive_uitest.cc

@@ -196,8 +196,9 @@ IN_PROC_BROWSER_TEST_F(PasswordGenerationInteractiveTest,
   EXPECT_TRUE(GenerationPopupShowing());
 }
 
+// https://crbug.com/791389
 IN_PROC_BROWSER_TEST_F(PasswordGenerationInteractiveTest,
-                       AutoSavingGeneratedPassword) {
+                       DISABLED_AutoSavingGeneratedPassword) {
   scoped_refptr<password_manager::TestPasswordStore> password_store =
       static_cast<password_manager::TestPasswordStore*>(
           PasswordStoreFactory::GetForProfile(