[Merge M57] Display a simple tooltip text for empty labels in verbose states

[Merge M57] Display a simple tooltip text for empty labels in verbose states

As of M57, verbose state bubbles are used to display extension names.
When the process for an extension crashes or is killed, the bubble label will
be empty. This leads to a leading dot to be displayed in the bubble tooltip.
This CL fixes that.

BUG=691922
TBR=rsesek@chromium.org

Review-Url: https://codereview.chromium.org/2697903002
Cr-Commit-Position: refs/heads/master@{#450484}
(cherry picked from commit 1a2fcc1a4c4a40629e10b1a067004ace091ef341)

Review-Url: https://codereview.chromium.org/2695303003 .
Cr-Commit-Position: refs/branch-heads/2987@{#532}
Cr-Branched-From: ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed: https://chromium.googlesource.com/chromium/src/+/1174093e0197a1ec4cb655d8ec599c6b2c0ceae7

[meacer, 2017-02-15 22:26:01]

Description was changed from

==========
[Merge M57] Display a simple tooltip text for empty labels in verbose states

As of M57, verbose state bubbles are used to display extension names.
When the process for an extension crashes or is killed, the bubble label will
be empty. This leads to a leading dot to be displayed in the bubble tooltip.
This CL fixes that.

BUG=691922
TBR=rsesek@chromium.org

Review-Url: https://codereview.chromium.org/2697903002
Cr-Commit-Position: refs/heads/master@{#450484}
(cherry picked from commit 1a2fcc1a4c4a40629e10b1a067004ace091ef341)
==========

to

==========
[Merge M57] Display a simple tooltip text for empty labels in verbose states

As of M57, verbose state bubbles are used to display extension names.
When the process for an extension crashes or is killed, the bubble label will
be empty. This leads to a leading dot to be displayed in the bubble tooltip.
This CL fixes that.

BUG=691922
TBR=rsesek@chromium.org

Review-Url: https://codereview.chromium.org/2697903002
Cr-Commit-Position: refs/heads/master@{#450484}
(cherry picked from commit 1a2fcc1a4c4a40629e10b1a067004ace091ef341)

Review-Url: https://codereview.chromium.org/2695303003 .
Cr-Commit-Position: refs/branch-heads/2987@{#532}
Cr-Branched-From:
ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed:
https://chromium.googlesource.com/chromium/src/+/1174093e0197a1ec4cb655d8ec59...
==========

[meacer, 2017-02-15 22:26:03]

Committed patchset #1 (id:1) manually as
1174093e0197a1ec4cb655d8ec599c6b2c0ceae7.