Added notification when user presses backspace to use new shortcut.

Added notification when user presses backspace to use new shortcut.

This adds a new type of notification bubble (based on the "Press Esc to
exit fullscreen" notification) that teaches users the new shortcuts for
Back and Forward when they press Back or Shift+Back.

Only implemented on Views systems (Windows, Linux, Chrome OS).

BUG=610039
Review-Url: https://codereview.chromium.org/1983803002
Cr-Commit-Position: refs/heads/master@{#396138}
(cherry picked from commit 7f3ddc6b70a09c7ae3bcd0d45007e415857fd09c)

Committed: https://chromium.googlesource.com/chromium/src/+/0cf3ec2939b1c4ec43b4aa7570ecb80ac1fbb1fb

[Matt Giuca, 2016-05-31 02:37:39]

Description was changed from

==========
Added notification when user presses backspace to use new shortcut.

This adds a new type of notification bubble (based on the "Press Esc to
exit fullscreen" notification) that teaches users the new shortcuts for
Back and Forward when they press Back or Shift+Back.

Only implemented on Views systems (Windows, Linux, Chrome OS).

BUG=610039

Review-Url: https://codereview.chromium.org/1983803002
Cr-Commit-Position: refs/heads/master@{#396138}
(cherry picked from commit 7f3ddc6b70a09c7ae3bcd0d45007e415857fd09c)
==========

to

==========
Added notification when user presses backspace to use new shortcut.

This adds a new type of notification bubble (based on the "Press Esc to
exit fullscreen" notification) that teaches users the new shortcuts for
Back and Forward when they press Back or Shift+Back.

Only implemented on Views systems (Windows, Linux, Chrome OS).

BUG=610039

Review-Url: https://codereview.chromium.org/1983803002
Cr-Commit-Position: refs/heads/master@{#396138}
(cherry picked from commit 7f3ddc6b70a09c7ae3bcd0d45007e415857fd09c)
==========

[Matt Giuca, 2016-05-31 02:46:36]

Description was changed from

==========
Added notification when user presses backspace to use new shortcut.

This adds a new type of notification bubble (based on the "Press Esc to
exit fullscreen" notification) that teaches users the new shortcuts for
Back and Forward when they press Back or Shift+Back.

Only implemented on Views systems (Windows, Linux, Chrome OS).

BUG=610039

Review-Url: https://codereview.chromium.org/1983803002
Cr-Commit-Position: refs/heads/master@{#396138}
(cherry picked from commit 7f3ddc6b70a09c7ae3bcd0d45007e415857fd09c)
==========

to

==========
Added notification when user presses backspace to use new shortcut.

This adds a new type of notification bubble (based on the "Press Esc to
exit fullscreen" notification) that teaches users the new shortcuts for
Back and Forward when they press Back or Shift+Back.

Only implemented on Views systems (Windows, Linux, Chrome OS).

BUG=610039

Review-Url: https://codereview.chromium.org/1983803002
Cr-Commit-Position: refs/heads/master@{#396138}
(cherry picked from commit 7f3ddc6b70a09c7ae3bcd0d45007e415857fd09c)

Committed:
https://chromium.googlesource.com/chromium/src/+/0cf3ec2939b1c4ec43b4aa7570ec...
==========

[Matt Giuca, 2016-05-31 02:46:40]

Committed patchset #1 (id:1) manually as
0cf3ec2939b1c4ec43b4aa7570ecb80ac1fbb1fb.

[Peter Kasting, 2016-05-31 04:07:33]

pkasting@chromium.org changed reviewers:
+ pkasting@chromium.org

[Peter Kasting, 2016-05-31 04:07:34]

LGTM