Make building of resource zips and srcjars hermetic

When the inputs of a zip are the same, this ensures that the output zip
is the same by using a constant for file timestamps.

When making a change to base_java, and recompiling chrome_apk, time to
build went from 74sec -> 67sec

BUG=523420

Review URL: https://codereview.chromium.org/1319623002

Cr-Commit-Position: refs/heads/master@{#347097}


CrOS-Libchrome-Original-Commit: 5cb5ae912f80e5c7c6f7e71a8dc9b77ec7c87edf
1 file changed
tree: e7853faf34fc6e7fe82f0b5cd9ac9c16759422d1
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/