Properly create zero-initialized local memory.

Previous code used memset() to zero the memory which forces
the pages to be realized and always adds the complete size
to the process's working set.

BUG=612470

Review-Url: https://codereview.chromium.org/2016013003
Cr-Commit-Position: refs/heads/master@{#397489}


CrOS-Libchrome-Original-Commit: eda1a99787e55f9ea71687361e0dd3f54492e603
2 files changed
tree: 459dfd619c138103593f6e48e48e7a74e53cf379
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/