[IntentHandling] Support share title for share intent.

For sharing from web, we should allow to pass the text, url and title to
the target. This CL adds the support for this.

BUG=1127670

Change-Id: I592afef3937bca2a38b35c7441ef71d36f5187cf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2562807
Commit-Queue: Maggie Cai <mxcai@chromium.org>
Reviewed-by: Dominick Ng <dominickn@chromium.org>
Cr-Commit-Position: refs/heads/master@{#831764}