Backed out changeset 0f7fe4800ace for landing with the wrong bug number.

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extra : rebase_source : fe37a4e6b566cb2121079ad95bfdce99ab997d33
Bug 1067231 - Send touch caret tap event. r=ehsan
DONTBUILD

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extra : rebase_source : 0dfc843425bccd13da56fd17d9d854352b07f9a3