Always eat mouse clicks on plugins on the Mac
Always eat mouse clicks on plugins on the Mac

Not all plugins reliably report whether they have handled events; other Mac browsers don't allow clicks to "fall through" plugins (see for example WebNetscapePluginEventHandlerCarbon::mouseDown, which logs but discards the return value), so we'll do the same.

BUG=31358
TEST=Double-click in a plugin; it should not get a selection highlight.

Review URL: http://codereview.chromium.org/549067

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@36361 0039d316-1c4b-4281-b951-d872f2087c98

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