message: Install CIPD ninja using DEPS
  See chromium/src's CL for the context.
  Cr-Commit-Position: refs/heads/main@{#38250}
diff: @@ -31,6 +31,10 @@ vars = {
  # reclient CIPD package version
  'reclient_version': 're_client_version:0.78.0.6f1e751-gomaip',
  +
  + # ninja CIPD package version
  + # https://chrome-infra-packages.appspot.com/p/infra/3pp/tools/ninja
  + 'ninja_version': 'version:2@1.8.2.chromium.3',
  }
  deps = {
  @@ -105,6 +109,16 @@ deps = {
  'src/buildtools/third_party/libunwind/trunk':
  'https://chromium.googlesource.com/external/github.com/llvm/llvm-project/libunwind.git@7ff728a9779cdc8e0639c032dc45cc20f7b4af21',
  + 'src/third_party/ninja': {
  + 'packages': [
  + {
  + 'package': 'infra/3pp/tools/ninja/${{platform}}',
  + 'version': Var('ninja_version'),
  + }
  + ],
  + 'dep_type': 'cipd',
  + },
  +
  'src/third_party/android_system_sdk': {
  'packages': [
  {
  