Merge changes Iccba8caf,I1eb49f25,Id77575f8,I5679cb51,I7f9f3eb6, ...

* changes:
  Convert android/ninja_deps_test.go to test fixtures
  Add NinjaDeps to TestResult
  Convert android/singleton_module_test.go to test fixtures
  Convert android/neverallow_test.go to test fixtures
  Convert android/singleton_module_test.go to test fixtures
  Convert android/variable_test.go to test fixtures
  Convert android/soong_config_modules_test.go to test fixtures
  Convert android/mutator_test.go to test fixtures
  Convert android/deptag_test.go to test fixtures