GitLab

To share a temporary page, we use a content: URI instead of a file URI
so that we don't need to publish the page to the download directory.

Bug: 758733
Change-Id: I873756591fc29537fa1290a0153980f1135db04b
Reviewed-on: https://chromium-review.googlesource.com/1056214
Commit-Queue: Peter Williamson <petewil@chromium.org>
Reviewed-by: David Trainor <dtrainor@chromium.org>
Reviewed-by: Yafei Duan <romax@chromium.org>
Cr-Commit-Position: refs/heads/master@{#558786}