Suggested fix for bubbles: https://chromium-review.googlesource.com/c/chromium/src/+/1140307

This is bug 63773, I don't think it needs to be view restricted.

Changing the type to Bug to remove view restriction.

I'm attaching some screenshots to clarify the context of this bug and provide the real example.

double-click-0.png - Web page displays "CHECK MY MICROPHONE" button. Malicious web page could display "Double-click to win the price!" here. User moves mouse cursor over the "CHECK" word and tries to double-clicks it. 

double-click-1.png - Permission prompt is displayed immediately after the first click. Mouse cursor is over the "Allow" button now. Time for the second click from the double-click.

double-click-2.png - Microphone permission has been granted. User's intention was to double-click the "CHECK MY MICROPHONE" button but the second click unintentionally triggered an action that granted the permission.

Deleted: double-click-0.png 125 KB

	double-click-0.png 125 KB View Download

Deleted: double-click-1.png 97.7 KB

	double-click-1.png 97.7 KB View Download

Deleted: double-click-2.png 47.0 KB

	double-click-2.png 47.0 KB View Download

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8f676f5a701605f6f01ecade4652ee72d55edbfa

commit 8f676f5a701605f6f01ecade4652ee72d55edbfa
Author: Tomasz Moniuszko <tmoniuszko@opera.com>
Date: Fri Sep 14 11:44:34 2018

Add double-click protection to bubbles

Potentially dangerous situation is possible when user is performing
double-click on UI element. If bubble is being shown as a result of
the first click, the control under the mouse cursor (button on
the bubble) can be activated with the second click. This wasn't
the intention of the user as the time between clicks was too short
to read the contents in the bubble that appeared. For example, user
can accidentally click "Accept" button on the permission prompt
bubble.

This CL adds protection against such unintended clicks. Mouse and
touch events are ignored for a short period of time after bubble
has been shown.

Bug:  864530 
Change-Id: I54d229bf39dd000079b9eabd8de1cfba5103a022
Reviewed-on: https://chromium-review.googlesource.com/1140307
Commit-Queue: Tomasz Moniuszko <tmoniuszko@opera.com>
Reviewed-by: Michael Wasserman <msw@chromium.org>
Cr-Commit-Position: refs/heads/master@{#591324}
[modify] https://crrev.com/8f676f5a701605f6f01ecade4652ee72d55edbfa/chrome/browser/ui/views/autofill/save_card_bubble_views_browsertest_base.cc
[modify] https://crrev.com/8f676f5a701605f6f01ecade4652ee72d55edbfa/chrome/browser/ui/views/sync/one_click_signin_dialog_view_unittest.cc
[modify] https://crrev.com/8f676f5a701605f6f01ecade4652ee72d55edbfa/chrome/browser/ui/views/toolbar/toolbar_actions_bar_bubble_views_unittest.cc
[modify] https://crrev.com/8f676f5a701605f6f01ecade4652ee72d55edbfa/ui/views/BUILD.gn
[modify] https://crrev.com/8f676f5a701605f6f01ecade4652ee72d55edbfa/ui/views/bubble/bubble_dialog_delegate_view_unittest.cc
[modify] https://crrev.com/8f676f5a701605f6f01ecade4652ee72d55edbfa/ui/views/bubble/bubble_frame_view.cc
[modify] https://crrev.com/8f676f5a701605f6f01ecade4652ee72d55edbfa/ui/views/bubble/bubble_frame_view.h
[modify] https://crrev.com/8f676f5a701605f6f01ecade4652ee72d55edbfa/ui/views/bubble/bubble_frame_view_unittest.cc
[add] https://crrev.com/8f676f5a701605f6f01ecade4652ee72d55edbfa/ui/views/event_utils.cc
[add] https://crrev.com/8f676f5a701605f6f01ecade4652ee72d55edbfa/ui/views/event_utils.h
[modify] https://crrev.com/8f676f5a701605f6f01ecade4652ee72d55edbfa/ui/views/window/dialog_client_view.cc
[modify] https://crrev.com/8f676f5a701605f6f01ecade4652ee72d55edbfa/ui/views/window/dialog_client_view.h
[modify] https://crrev.com/8f676f5a701605f6f01ecade4652ee72d55edbfa/ui/views/window/dialog_client_view_unittest.cc