commit 0a6cfc6ed4370aa3f4974ac7ed0e1009e0f9687e
author treib <treib@chromium.org> Mon Mar 20 13:10:30 2017
committer Commit bot <commit-bot@chromium.org> Mon Mar 20 13:10:30 2017
tree 9ce2f452d89fc8aa4d2d246c36fdd8dfc0e6e640
parent e32318796eaf782ee8afe8ec047b1288f756f644

components/image_fetcher: Expose RequestMetadata from ImageFetcher

Before this CL, the metadata was returned by ImageDataFetcher, but not
forwarded by ImageFetcher to its clients. Now it is passed on from
ImageFetcher too.

So far, no client uses the metadata, but components/doodle will use it
soon, to detect if an image request was served from the http cache.
See also https://codereview.chromium.org/2749283002/.

TBRing mechanical changes to hats_notification_controller and logo_bridge
TBR=achuith@chromium.org,bauerb@chromium.org

BUG=690467

Review-Url: https://codereview.chromium.org/2757643002
Cr-Commit-Position: refs/heads/master@{#458048}