Spoof as Safari when running Silverlight 4 on the Mac
Spoof as Safari when running Silverlight 4 on the Mac

Silverlight 4 doesn't support Chrome, so Chrome doesn't end up on the right
event path; spoofing as Safari fixes mouseover handling, and doesn't appear to
regress anything.

BUG=46842
TEST=Mouseovers should work in Silverlight 4 on the Mac.

Review URL: http://codereview.chromium.org/2818020

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@50385 0039d316-1c4b-4281-b951-d872f2087c98

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