Enable new ownership edges for base::SharedMemory

Now mojo is fixed to pass unique IDs across processes, Let's enable new
ownership edges for base::SharedMemory and remove old ownership edges.

Perf sheriffs: If you see sharp bumps in metrics like cc/gpu/discardable/
shared_memory this is very likely the culrprit, please revert it.

Bug: 604726
Change-Id: Iad7bf261f3e2c884d60e935cb2635923de46b2e2
Reviewed-on: https://chromium-review.googlesource.com/557741
Commit-Queue: Hajime Hoshi <hajimehoshi@chromium.org>
Reviewed-by: Siddhartha S <ssid@chromium.org>
Reviewed-by: Primiano Tucci <primiano@chromium.org>
Cr-Commit-Position: refs/heads/master@{#488174}

CrOS-Libchrome-Original-Commit: 52448951331fb305cd6342b4fc84542dc4d60d62
3 files changed
tree: 857538be8a1613e9db7ed59e54ee36c0e9ba9b36
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/