dbus: Make MockObjectManager useful

MockObjectManager is currently not useful as the mocked methods are not
virtual.

BUG=chromium:812468
TEST=None

Change-Id: I3fa533299cda839b4f3602de88f6e76dbac5b24c
Reviewed-on: https://chromium-review.googlesource.com/982942
Reviewed-by: Ryo Hashimoto <hashimoto@chromium.org>
Commit-Queue: Sonny Sasaka <sonnysasaka@chromium.org>
Cr-Commit-Position: refs/heads/master@{#546746}

CrOS-Libchrome-Original-Commit: f1599cb66b77be2a74ec005fcb411d1c6ba113c4
1 file changed
tree: 9a78526ddf5cece487d208e943bd9e26b572b5a9
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/