Merge remote-tracking branch 'goog/mirror-aosp-master' into rvc-dev

* goog/mirror-aosp-master:
  Run LoadHooks before registering module
  Actually write an empty ninja file with --empty-ninja-file

Bug: 155462403
Test: treehugger
Change-Id: Ia2e5856c52407cebca56abb195915b370e26f0e7
Merged-In: I649f2a524f200d696b038ee6bc99d95308e1b475