Add OpenTypeCapsSupport class

Add OpenTypeCapsSupport class

As preparation for implementing correct font-variant-caps we need to be
able to check font files for their ability to support caps related
OpenType features, such as 'smcp', 'c2sc' etc.

The implementation files are split in two, one part Chromium-side
implementation, one part Mozilla Public License'd code adapted from
Firefox.

Relanding this after revert in
https://codereview.chromium.org/1891613002/ due to broken
blink_platform_unittests. Splitting out the test into a separate CL
in order to investigate a possible swarming/isolate step issue.

BUG=587094
TEST=OpenTypeCapsSupportTest.cpp

Committed: https://crrev.com/15a403b49955e66c4b3abb8f3f93c5426d7923b1
Cr-Commit-Position: refs/heads/master@{#387256}

[drott, 2016-04-14 06:23:48]

drott@chromium.org changed reviewers:
+ behdad@chromium.org, eae@chromium.org, kojii@chromium.org

[drott, 2016-04-14 06:25:21]

kojii@, could you review this? This would be helpful, so that I can continue
landing the other dependent changes during today. The previous CL was LGTM'ed in
https://codereview.chromium.org/1882063002/, I am just removing the test case
which triggered a swarming test infrastructure issue, and I plan to land it
separately. Thanks.

[drott, 2016-04-14 06:25:33]

The CQ bit was checked by drott@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-04-14 06:25:47]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1886953002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1886953002/1

[kojii, 2016-04-14 06:54:26]

lgtm, hope this sticks this time ;)

[kojii, 2016-04-14 06:54:28]

lgtm, hope this sticks this time ;)

[drott, 2016-04-14 07:00:24]

The CQ bit was unchecked by drott@chromium.org

[drott, 2016-04-14 07:00:27]

The CQ bit was checked by drott@chromium.org

[commit-bot: I haz the power, 2016-04-14 07:00:41]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1886953002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1886953002/1

[commit-bot: I haz the power, 2016-04-14 07:44:32]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-14 07:45:55]

Description was changed from

==========
Add OpenTypeCapsSupport class

As preparation for implementing correct font-variant-caps we need to be
able to check font files for their ability to support caps related
OpenType features, such as 'smcp', 'c2sc' etc.

The implementation files are split in two, one part Chromium-side
implementation, one part Mozilla Public License'd code adapted from
Firefox.

Relanding this after revert in
https://codereview.chromium.org/1891613002/ due to broken
blink_platform_unittests. Splitting out the test into a separate CL
in order to investigate a possible swarming/isolate step issue.

BUG=587094
TEST=OpenTypeCapsSupportTest.cpp
==========

to

==========
Add OpenTypeCapsSupport class

As preparation for implementing correct font-variant-caps we need to be
able to check font files for their ability to support caps related
OpenType features, such as 'smcp', 'c2sc' etc.

The implementation files are split in two, one part Chromium-side
implementation, one part Mozilla Public License'd code adapted from
Firefox.

Relanding this after revert in
https://codereview.chromium.org/1891613002/ due to broken
blink_platform_unittests. Splitting out the test into a separate CL
in order to investigate a possible swarming/isolate step issue.

BUG=587094
TEST=OpenTypeCapsSupportTest.cpp

Committed: https://crrev.com/15a403b49955e66c4b3abb8f3f93c5426d7923b1
Cr-Commit-Position: refs/heads/master@{#387256}
==========

[commit-bot: I haz the power, 2016-04-14 07:45:56]

Patchset 1 (id:??) landed as
https://crrev.com/15a403b49955e66c4b3abb8f3f93c5426d7923b1
Cr-Commit-Position: refs/heads/master@{#387256}