The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e121c2b33bb798adfdc83199ea3a033dc8ad223d

commit e121c2b33bb798adfdc83199ea3a033dc8ad223d
Author: Caroline Rising <corising@chromium.org>
Date: Mon Dec 03 20:19:29 2018

Add flag for tab hover cards feature.

Bug: 910739
Change-Id: Ic708c771665e70979cf6011c482dd050ce749fe5
Reviewed-on: https://chromium-review.googlesource.com/c/1357539
Commit-Queue: Caroline Rising <corising@chromium.org>
Reviewed-by: Elly Fong-Jones <ellyjones@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Cr-Commit-Position: refs/heads/master@{#613213}
[modify] https://crrev.com/e121c2b33bb798adfdc83199ea3a033dc8ad223d/chrome/browser/about_flags.cc
[modify] https://crrev.com/e121c2b33bb798adfdc83199ea3a033dc8ad223d/chrome/browser/browser_features.cc
[modify] https://crrev.com/e121c2b33bb798adfdc83199ea3a033dc8ad223d/chrome/browser/browser_features.h
[modify] https://crrev.com/e121c2b33bb798adfdc83199ea3a033dc8ad223d/chrome/browser/flag-metadata.json
[modify] https://crrev.com/e121c2b33bb798adfdc83199ea3a033dc8ad223d/chrome/browser/flag_descriptions.cc
[modify] https://crrev.com/e121c2b33bb798adfdc83199ea3a033dc8ad223d/chrome/browser/flag_descriptions.h
[modify] https://crrev.com/e121c2b33bb798adfdc83199ea3a033dc8ad223d/tools/metrics/histograms/enums.xml

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/358311a36ab9c3fd0799d90ec9c1682e78146358

commit 358311a36ab9c3fd0799d90ec9c1682e78146358
Author: Caroline Rising <corising@chromium.org>
Date: Wed Jan 02 20:15:13 2019

Add tab hover card prototype behind flag.

Add tab hover cards containing page title and domain triggered when hovering over a tab. Triggering behavior is hidden behind TabHoverCards flag.

Bug: 910739
Change-Id: I82b4b0573a8cdce407696acef8c2ed91c081b8b5
Reviewed-on: https://chromium-review.googlesource.com/c/1363631
Commit-Queue: Caroline Rising <corising@chromium.org>
Reviewed-by: Peter Boström <pbos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#619478}
[modify] https://crrev.com/358311a36ab9c3fd0799d90ec9c1682e78146358/chrome/browser/ui/BUILD.gn
[modify] https://crrev.com/358311a36ab9c3fd0799d90ec9c1682e78146358/chrome/browser/ui/views/tabs/tab.cc
[modify] https://crrev.com/358311a36ab9c3fd0799d90ec9c1682e78146358/chrome/browser/ui/views/tabs/tab_controller.h
[add] https://crrev.com/358311a36ab9c3fd0799d90ec9c1682e78146358/chrome/browser/ui/views/tabs/tab_hover_card_bubble_view.cc
[add] https://crrev.com/358311a36ab9c3fd0799d90ec9c1682e78146358/chrome/browser/ui/views/tabs/tab_hover_card_bubble_view.h
[add] https://crrev.com/358311a36ab9c3fd0799d90ec9c1682e78146358/chrome/browser/ui/views/tabs/tab_hover_card_bubble_view_browsertest.cc
[modify] https://crrev.com/358311a36ab9c3fd0799d90ec9c1682e78146358/chrome/browser/ui/views/tabs/tab_strip.cc
[modify] https://crrev.com/358311a36ab9c3fd0799d90ec9c1682e78146358/chrome/browser/ui/views/tabs/tab_strip.h
[modify] https://crrev.com/358311a36ab9c3fd0799d90ec9c1682e78146358/chrome/browser/ui/views/tabs/tab_unittest.cc
[modify] https://crrev.com/358311a36ab9c3fd0799d90ec9c1682e78146358/chrome/test/BUILD.gn

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/78e4998126d8b665d2464452d7a3a5c7b18fed8a

commit 78e4998126d8b665d2464452d7a3a5c7b18fed8a
Author: Caroline Rising <corising@chromium.org>
Date: Fri Jan 04 22:23:38 2019

Fix flaky tab hover card test.

Change test to use two windows to prevent another window from becoming active when calling BrowserView::Deactivate(). Add helper class to wait for a window to become deactive.

Bug: 910739
Change-Id: I412a87bbc5de891f67697410e3848694f3c9a893
Reviewed-on: https://chromium-review.googlesource.com/c/1394874
Commit-Queue: Caroline Rising <corising@chromium.org>
Reviewed-by: Peter Boström <pbos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#620085}
[modify] https://crrev.com/78e4998126d8b665d2464452d7a3a5c7b18fed8a/chrome/browser/ui/views/tabs/tab_hover_card_bubble_view_browsertest.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/22310601bf95e8fdaa4f3707ae5c35c00058fac9

commit 22310601bf95e8fdaa4f3707ae5c35c00058fac9
Author: Caroline Rising <corising@chromium.org>
Date: Fri Jan 04 23:39:09 2019

Suppress tab tooltips when tab hover cards are enabled.

Bug: 910739
Change-Id: I3ab7dd42d8f74806f427acea15257879c810787a
Reviewed-on: https://chromium-review.googlesource.com/c/1394439
Reviewed-by: Peter Boström <pbos@chromium.org>
Commit-Queue: Caroline Rising <corising@chromium.org>
Cr-Commit-Position: refs/heads/master@{#620106}
[modify] https://crrev.com/22310601bf95e8fdaa4f3707ae5c35c00058fac9/chrome/browser/ui/views/tabs/tab.cc