Remove duplicate color used in EB ActionBar.

Remove duplicate color used in EB ActionBar.

- enhanced_bookmark_drawer_selected_color is very close to
light_active_color (it is really difficult to tell them apart)
- enhanced_bookmark_selection_action_bar_background is similar
to light_active_color

BUG=510941
Committed: https://crrev.com/983bc7cb4593bba22510e31ab73e33c21231e009
Cr-Commit-Position: refs/heads/master@{#339118}

[aurimas (slooooooooow), 2015-07-16 19:47:50]

aurimas@chromium.org changed reviewers:
+ kkimlabs@chromium.org

[aurimas (slooooooooow), 2015-07-16 19:47:51]

PTAL

[Kibeom Kim (inactive), 2015-07-16 20:06:02]

lgtm thanks!

[aurimas (slooooooooow), 2015-07-16 20:09:18]

The CQ bit was checked by aurimas@chromium.org

[commit-bot: I haz the power, 2015-07-16 20:12:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1237563004/20001

[commit-bot: I haz the power, 2015-07-16 21:01:53]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-07-16 21:04:19]

Patchset 2 (id:??) landed as
https://crrev.com/983bc7cb4593bba22510e31ab73e33c21231e009
Cr-Commit-Position: refs/heads/master@{#339118}