Re-Reland Linux Window Control Alignment

Re-Reland Linux Window Control Alignment
Modifying CustomFrameView to layout window controls based on user configurations. For linux begin observing the configs and changes. For other systems fall back on a default ordering.

This reland addresses changes to custom_frame_view_unittest.cc that landed before the original patch. Causing a build failure.

Original code review: https://codereview.chromium.org/281353009/
Revert code review: https://codereview.chromium.org/294473016

Revert "Revert 272352 "Reland Linux Window Control Alignment""
This reverts commit b6f34fbeb011683117b33639ca78d66ff32d5bfd.

TBR=oshima, sadrul

TEST=CustomFrameViewTest
BUG=351917
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=272576

[jonross, 2014-05-23 15:28:06]

Reland a patch, fix a trivial compilation error introduced by another change
that landed first.

[flackr, 2014-05-23 15:31:42]

lgtm

[sadrul, 2014-05-23 15:33:14]

lgtm

[jonross, 2014-05-23 15:33:45]

The CQ bit was checked by jonross@chromium.org

[commit-bot: I haz the power, 2014-05-23 15:34:13]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jonross@chromium.org/296283003/20001

[commit-bot: I haz the power, 2014-05-23 19:05:42]

Change committed as 272576