The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/0013e8398ca2cb80185a08bcf14358bc4310b27a

commit 0013e8398ca2cb80185a08bcf14358bc4310b27a
Author: estade <estade@chromium.org>
Date: Fri Jun 17 21:07:03 2016

Don't set a default action for ToolbarActionsBarBubbles.

This isn't totally correct; some of these bubbles should have defaults
and some should not. But this was the behavior previous to dc0d234f7c87
so the more conservative approach is to revert to the old behavior and
later change/improve individual bubbles that should have defaults by
adding them.

This patch is designed to be easy/safe to merge to M52.

BUG= 621122 

Review-Url: https://codereview.chromium.org/2076993002
Cr-Commit-Position: refs/heads/master@{#400503}

[modify] https://crrev.com/0013e8398ca2cb80185a08bcf14358bc4310b27a/chrome/browser/ui/views/toolbar/toolbar_actions_bar_bubble_views.cc
[modify] https://crrev.com/0013e8398ca2cb80185a08bcf14358bc4310b27a/chrome/browser/ui/views/toolbar/toolbar_actions_bar_bubble_views.h

Moving this nonessential bug to the next milestone.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Your change meets the bar and is auto-approved for M52 (branch: 2743)

estade@, please have the CL merged in to M52 branch by EOD so that it gets picked up for beta promotion scheduled this week.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/389f429ccbf0bddbc85a19abae863370f012c7cb

commit 389f429ccbf0bddbc85a19abae863370f012c7cb
Author: Evan Stade <estade@chromium.org>
Date: Mon Jun 20 21:10:02 2016

Don't set a default action for ToolbarActionsBarBubbles.

This isn't totally correct; some of these bubbles should have defaults
and some should not. But this was the behavior previous to dc0d234f7c87
so the more conservative approach is to revert to the old behavior and
later change/improve individual bubbles that should have defaults by
adding them.

This patch is designed to be easy/safe to merge to M52.

BUG= 621122 

Review-Url: https://codereview.chromium.org/2076993002
Cr-Commit-Position: refs/heads/master@{#400503}
(cherry picked from commit 0013e8398ca2cb80185a08bcf14358bc4310b27a)

Review URL: https://codereview.chromium.org/2084713002 .

Cr-Commit-Position: refs/branch-heads/2743@{#412}
Cr-Branched-From: 2b3ae3b8090361f8af5a611712fc1a5ab2de53cb-refs/heads/master@{#394939}

[modify] https://crrev.com/389f429ccbf0bddbc85a19abae863370f012c7cb/chrome/browser/ui/views/toolbar/toolbar_actions_bar_bubble_views.cc
[modify] https://crrev.com/389f429ccbf0bddbc85a19abae863370f012c7cb/chrome/browser/ui/views/toolbar/toolbar_actions_bar_bubble_views.h

estade@ Can this be verified manually so that we can verify this issue from test team end? Please provide us test steps or URL to verify.

Thanks,

privard@ should be able to verify and/or provide manual test steps

Verified that the bubbles no longer have a default action set in M52.