Clarify runtime.connect and runtime.sendMessage docs.

BUG=326250
R=mkearney@chromium.org
TBR=yoz@chromium.org

Review URL: https://codereview.chromium.org/134533004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@245292 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 245292
[rAC, OSX] Fix focus ring drawing.

Ensure there is a) a focus ring around the entirety of the account
chooser, not just the image, if Chrome is running on 10.6. And b) use
the SDK's focus ring drawing from 10.7 on instead. (Before this CL,
10.7+ systems get _two_ focus rings for ImageButtonCells.)

BUG=308192
R=thakis@chromium.org

Review URL: https://codereview.chromium.org/140353002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@245293 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 245293