Only send unprocessed key events upwards if the RenderWidgetHost is not hidden.

BUG=36661 Ctrl-1 gets queued while Ctrl-tab doesn't
TEST=See bug report.

Review URL: http://codereview.chromium.org/660069

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@40085 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed