Added resource name mappings for new media playback UI.

Added resource name mappings for new media playback UI.

This CL adds string mappings for new image and CSS assets for
the new media playback UI.  It does not change any existing functionality.

It requires the assets to be checked into WebKit.

BUG=446350, 488625, 487344
Committed: https://crrev.com/a8ce46eea4cd289b8c142b08f0c3efe6d4af9130
Cr-Commit-Position: refs/heads/master@{#336367}

[liberato (no reviews please), 2015-06-23 16:32:46]

liberato@chromium.org changed reviewers:
+ jochen@chromium.org

[liberato (no reviews please), 2015-06-23 16:51:39]

This is just name resource name mapping for the new media playback UI resources.
 It requires https://codereview.chromium.org/1207463002/ before this will
compile.

[jochen (gone - plz use gerrit), 2015-06-24 14:46:30]

lgtm

[liberato (no reviews please), 2015-06-26 06:47:47]

The CQ bit was checked by liberato@chromium.org

[commit-bot: I haz the power, 2015-06-26 06:48:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1197033007/1

[commit-bot: I haz the power, 2015-06-26 07:58:31]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-06-26 07:58:32]

Try jobs failed on following builders:
  linux_android_rel_ng on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_android_r...)

[liberato (no reviews please), 2015-06-26 13:46:14]

The CQ bit was checked by liberato@chromium.org

[commit-bot: I haz the power, 2015-06-26 13:46:40]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1197033007/1

[commit-bot: I haz the power, 2015-06-26 14:55:46]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-06-26 14:56:47]

Patchset 1 (id:??) landed as
https://crrev.com/a8ce46eea4cd289b8c142b08f0c3efe6d4af9130
Cr-Commit-Position: refs/heads/master@{#336367}