Do not cycle through 3 shades of green when showing paint rects in HUD

Make them all use one shade of green to avoid excessive flickery.

This effectivale reverts r251953 ( https://codereview.chromium.org/121223002), though the single paint color is still green.
We plan to eventually change to green that fades with time after last paint.

BUG=324535

Review URL: https://codereview.chromium.org/172123002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@252335 0039d316-1c4b-4281-b951-d872f2087c98
Make ui::GetWindowRect() take the window decorations in account

BUG=344749
TEST=Manual, see bug

Review URL: https://codereview.chromium.org/173233002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@252336 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 252336