Mac: adjust sizes of progress bars to be equal to painted size.

Mac: adjust sizes of progress bars to be equal to painted size.

Moves code to compute the size into the style adjustment phase, and simplifies
it according to the actual margins specified in the style configs.

BUG=632319
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2

Review-Url: https://codereview.chromium.org/2305133002
Cr-Commit-Position: refs/heads/master@{#416955}
(cherry picked from commit ddcf55c02da8508bb6766b078e70100d5ad66621)

Committed: https://chromium.googlesource.com/chromium/src/+/bf79a1b8cc1ce49dc911d8130621096d1bb13073

[chrishtr, 2016-09-09 19:15:43]

Description was changed from

==========
Mac: adjust sizes of progress bars to be equal to painted size.

Moves code to compute the size into the style adjustment phase, and simplifies
it according to the actual margins specified in the style configs.

BUG=632319
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2

Review-Url: https://codereview.chromium.org/2305133002
Cr-Commit-Position: refs/heads/master@{#416955}
(cherry picked from commit ddcf55c02da8508bb6766b078e70100d5ad66621)
==========

to

==========
Mac: adjust sizes of progress bars to be equal to painted size.

Moves code to compute the size into the style adjustment phase, and simplifies
it according to the actual margins specified in the style configs.

BUG=632319
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2

Review-Url: https://codereview.chromium.org/2305133002
Cr-Commit-Position: refs/heads/master@{#416955}
(cherry picked from commit ddcf55c02da8508bb6766b078e70100d5ad66621)

Committed:
https://chromium.googlesource.com/chromium/src/+/bf79a1b8cc1ce49dc911d8130621...
==========

[chrishtr, 2016-09-09 19:15:45]

Committed patchset #1 (id:1) manually as
bf79a1b8cc1ce49dc911d8130621096d1bb13073.