Set the maximum lines number to 32 for Javascript alert message on Mac port.

BUG=331219
R=jeremy@chromium.org
TEST=Manual test please: Launch chrome and load the popup-bug.html in BUG331219

Review URL: https://codereview.chromium.org/140323005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@246457 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 246457
Fixes MouseWatcher regression

@ 233270 I changed MouseWatcher to be an EventWatcher. MouseWatcher
listens for MouseEvents and when an exit is received and the mouse is
not in a particular region notifies its delegate. MouseWatcher uses
the coordinates of the event supplied to OnMouseEvent. On Windows
mouse exit events haves coordinates of 0,0. This meant the
MouseWatcher would see an incorrect location and incorrectly notify
its delegate.

The fix is to grab coordinates from the system so that MOUSE_EXIT
events have coordinates.

BUG=336100
TEST=see bug
R=ben@chromium.org

Review URL: https://codereview.chromium.org/144513003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@246458 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 246458