Fix for a flag error introduced yesterday for non-client messages, which we do not handle actually but if we were to do it, we may  have found out than an extra bit was sometimes set.
Fix for a flag error introduced yesterday for non-client messages, which we
do not handle actually but if we were to do it, we may  have found out than
an extra bit was sometimes set.

For non-clicent mouse messages, the flag passed to the message procedure
should not be ORed with the mouse-event because it contains the result
of the last hit test instead.

Added flags merged in:
http://src.chromium.org/viewvc/chrome?view=rev&revision=9953




Review URL: http://codereview.chromium.org/21519

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@10043 0039d316-1c4b-4281-b951-d872f2087c98

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