Polish new dialog style layout and sizing.

Polish new dialog style layout and sizing.

Fix values of top/left dialog title insets, add explicit bottom inset.
Fix dialog inset and preferred size calculations, and layout for title/extra.
( long titles were not being accounted for, and getting cut off )
Add a title bar extra view to the views examples dialog.
See before/after/spec pics at http://crbug.com/242284#c14

BUG=242284, 240730, 166075
TEST=New dialog style looks good, no titles cut off.
R=sky@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=202479

[msw, 2013-05-24 18:55:51]

Hey Scott, please take a look; thanks!

[sky, 2013-05-24 20:25:12]

LGTM

[commit-bot: I haz the power, 2013-05-24 20:27:53]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/msw@chromium.org/15861012/1001

[commit-bot: I haz the power, 2013-05-25 05:13:06]

Retried try job too often on win_rel for step(s) chrome_frame_tests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win_rel&nu...

[commit-bot: I haz the power, 2013-05-25 18:06:49]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/msw@chromium.org/15861012/1001

[commit-bot: I haz the power, 2013-05-25 22:55:04]

Retried try job too often on win_rel for step(s) chrome_frame_tests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win_rel&nu...

[commit-bot: I haz the power, 2013-05-27 19:39:28]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/msw@chromium.org/15861012/1001

[commit-bot: I haz the power, 2013-05-28 00:40:19]

Commit queue rejected this change because the description was changed
between the time the change entered the commit queue and the time it
was ready to commit. You can safely check the commit box again.

[commit-bot: I haz the power, 2013-05-28 01:26:58]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/msw@chromium.org/15861012/1001

[commit-bot: I haz the power, 2013-05-28 01:56:18]

Change committed as 202479