Reduce memory usage in DelayedPersistentAllocation.

The PMA is limited to 32-bit values so it's known that |size| and
|offset| can't exceed that.  No need to waste space on 64-bit builds.

BUG=733380

Review-Url: https://codereview.chromium.org/2970883002
Cr-Commit-Position: refs/heads/master@{#484158}


CrOS-Libchrome-Original-Commit: 4e72a1554a6b4efb3ea711ead4876f0f3e276e45
2 files changed
tree: df3b10f8245ed0a07bef230368eb75e861eb5f2d
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/