Add close buttons to windows on overview mode.

BUG=337591
TEST=Open a few windows, press F5 to enter overview mode, click on one of the new close buttons and that window should go away with the remaining windows reflowing when necessar.

Review URL: https://codereview.chromium.org/183973002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256768 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 256768
Add a script for configuring adb for working remotely.

This script forwards ports between the local and the remote
machine allowing the developer to install APKs, run tests, etc
on a local device from a remote machine.

NOTRY=true

Review URL: https://codereview.chromium.org/120263003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256769 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 256769