Update mojo's WebMimeRegistry for supportsImagePrefixed

This is a new pure virtual on WebMimeRegistry.

The implementations of WebMimeRegistry appear to bind only to net, so
they could go somewhere and be shared by both content/ and mojo/ instead
of duplicated. But this fixes a pending compile error so should probably
happen first.

R=darin@chromium.org

Review URL: https://codereview.chromium.org/511583002

Cr-Commit-Position: refs/heads/master@{#291981}


CrOS-Libchrome-Original-Commit: 22317f423d71cce75c689fcd184e58d4169188d5
2 files changed
tree: 8eff5ca177cdb0ae24b4e656576362808210bafc
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/