Fill in PlatformPrivateFootprint on Linux 2/2

This CL populates the vm_swap_bytes field of the PlatformPrivateFootprint
struct on Linux.

The struct contains platform specific numbers that will be used by the
memory-infra service to compute the private memory footprint of the
process.

BUG=707019

Review-Url: https://codereview.chromium.org/2866723002
Cr-Commit-Position: refs/heads/master@{#472321}


CrOS-Libchrome-Original-Commit: bae6b3bcfa9dccd18b061beafcb17d0dbd39a7c9
2 files changed
tree: 99fe383cccd66aaca3a431f9ed5a0d769998a142
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/