commit 7eacc60e1556444061f9f84bac4d82c34419a2ae
author csharrison <csharrison@chromium.org> Fri Jul 22 19:15:58 2016
committer Commit bot <commit-bot@chromium.org> Fri Jul 22 19:17:52 2016
tree 5e2d85260fa2413b6467d06ff5049658cd3f8640
parent ac3dfbdb35158b27ed80f4c8d45342a4725fe1b7

Don't wait for AppCache for link rel preloads

The preload scanner currently waits for the Application Cache to be
initialized before sending out any preloads. This is less important for link
rel preloads, which are directives to send a fetch as soon as possible.

This patch bypasses the fetch queuing for these preloads.

For link preloads in headers, we can issue these as early as the commit
point (for those which don't have a media attribute).

BUG=629420

Review-Url: https://codereview.chromium.org/2165653004
Cr-Commit-Position: refs/heads/master@{#407227}