GitLab

Reads text and file attachments from introduction frame and appends
them to the share target.

Bug: 1085068
Change-Id: I0198a9edcfa5d8c7691514072c50577ff3d72428
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2320599
Commit-Queue: Himanshu Jaju <himanshujaju@chromium.org>
Reviewed-by: Alex Chau <alexchau@chromium.org>
Cr-Commit-Position: refs/heads/master@{#793136}