[merge-m57] Ensure the line on the origin info bubble extends the full width of the bubble.

[merge-m57] Ensure the line on the origin info bubble extends the full width of the bubble.

This regressed in r444474 which was necessary to adapt the bubble
margins to support Harmony layout (i.e. since margins are no longer a
compile-time constant).

The separator line, however, needs to ignore the margins completely. So
move the bubble margin into the classes doing layout above and below the
separator.

BUG=689574
Review-Url: https://codereview.chromium.org/2686983002
Cr-Commit-Position: refs/heads/master@{#449222}
(cherry picked from commit 3b76fcf9516aed2d90a61ae035cfdf2b2a18e08c)

Review-Url: https://codereview.chromium.org/2692773002 .
Cr-Commit-Position: refs/branch-heads/2987@{#467}
Cr-Branched-From: ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed: https://chromium.googlesource.com/chromium/src/+/39df7ec4a3cf18ffd93ac26ab1472d5031f4b9d5

[tapted, 2017-02-12 22:50:14]

Description was changed from

==========
[merge-m57] Ensure the line on the origin info bubble extends the full width of
the bubble.

This regressed in r444474 which was necessary to adapt the bubble
margins to support Harmony layout (i.e. since margins are no longer a
compile-time constant).

The separator line, however, needs to ignore the margins completely. So
move the bubble margin into the classes doing layout above and below the
separator.

BUG=689574

Review-Url: https://codereview.chromium.org/2686983002
Cr-Commit-Position: refs/heads/master@{#449222}
(cherry picked from commit 3b76fcf9516aed2d90a61ae035cfdf2b2a18e08c)
==========

to

==========
[merge-m57] Ensure the line on the origin info bubble extends the full width of
the bubble.

This regressed in r444474 which was necessary to adapt the bubble
margins to support Harmony layout (i.e. since margins are no longer a
compile-time constant).

The separator line, however, needs to ignore the margins completely. So
move the bubble margin into the classes doing layout above and below the
separator.

BUG=689574

Review-Url: https://codereview.chromium.org/2686983002
Cr-Commit-Position: refs/heads/master@{#449222}
(cherry picked from commit 3b76fcf9516aed2d90a61ae035cfdf2b2a18e08c)

Review-Url: https://codereview.chromium.org/2692773002 .
Cr-Commit-Position: refs/branch-heads/2987@{#467}
Cr-Branched-From:
ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed:
https://chromium.googlesource.com/chromium/src/+/39df7ec4a3cf18ffd93ac26ab147...
==========

[tapted, 2017-02-12 22:50:16]

Committed patchset #1 (id:1) manually as
39df7ec4a3cf18ffd93ac26ab1472d5031f4b9d5.