Magnifier: Support wrapping the cursor between extended monitors

This CL supports wrapping the cursor between primary and secondary monitors. The behavior is described at comment #1 of crbug.com/139766.

BUG=139766

Review URL: https://chromiumcodereview.appspot.com/10837092

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@150163 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed