Mojo code generator: change where to add computed data to mojom definitions

So that the same work is not done multiple times.

BUG=718614

Review-Url: https://codereview.chromium.org/2863353002
Cr-Commit-Position: refs/heads/master@{#470986}


CrOS-Libchrome-Original-Commit: 121205ac1fd5cf2274a6f429dec741fb602f7081
10 files changed
tree: 5037288384e5460b22b6b945414726ffede73318
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/