Install ninja to crashpad using DEPS

Ninja will be installed to the following paths.
- Linux: third_party/ninja/linux/ninja
- Mac: third_party/ninja/mac/ninja
- Windows: third_party/ninja/ninja.exe

This supports a workflow with VMs on the same host machine.

On Unix, `ninja` command wrapper in depot_tools will trigger third_party/ninja/ninja, which call linux or mac ninja.
On Windows, the depot_tools wrapper will trigger third_party/ninja/ninja.exe.

See the the discussions on the previous CL https://crrev.com/c/3924593 for more context.

See also chromium/src's CL https://crrev.com/c/3869740 for CIPD ninja migration.

Bug: chromium:1340825
Change-Id: Ia4ff83b4fdc5cb07b5c737cb9d00eaa167f0ffb0
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/3990128
Commit-Queue: Junji Watanabe <jwata@google.com>
Reviewed-by: Mark Mentovai <mark@chromium.org>

.gitignore

@@ -38,6 +38,9 @@
 /third_party/lss/lss
 /third_party/gyp/gyp
 /third_party/mini_chromium/mini_chromium
+/third_party/ninja/linux
+/third_party/ninja/mac*
+/third_party/ninja/ninja.exe
 /third_party/zlib/zlib
 /xcodebuild
 tags

DEPS

@@ -15,6 +15,9 @@
 vars = {
   'chromium_git': 'https://chromium.googlesource.com',
   'gn_version': 'git_revision:2ecd43a10266bd091c98e6dcde507c64f6a0dad3',
+  # ninja CIPD package version.
+  # https://chrome-infra-packages.appspot.com/p/infra/3pp/tools/ninja
+  'ninja_version': 'version:2@1.8.2.chromium.3',
   'pull_linux_clang': False,
   'pull_win_toolchain': False,
   # Controls whether crashpad/build/ios/setup-ios-gn.py is run as part of
@@ -133,6 +136,51 @@ deps = {
     'condition': 'checkout_fuchsia and host_os == "linux"',
     'dep_type': 'cipd'
   },
+  # depot_tools/ninja wrapper calls third_party/ninja/{ninja, ninja.exe}.
+  # crashpad/third_party/ninja/ninja is another wrapper to call linux ninja
+  # or mac ninja.
+  # This allows crashpad developers to work for multiple platforms on the same
+  # machine.
+  'crashpad/third_party/ninja': {
+    'packages': [
+      {
+        'package': 'infra/3pp/tools/ninja/${{platform}}',
+        'version': Var('ninja_version'),
+      }
+    ],
+    'condition': 'host_os == "win"',
+    'dep_type': 'cipd',
+  },
+  'crashpad/third_party/ninja/linux': {
+    'packages': [
+      {
+        'package': 'infra/3pp/tools/ninja/${{platform}}',
+        'version': Var('ninja_version'),
+      }
+    ],
+    'condition': 'host_os == "linux"',
+    'dep_type': 'cipd',
+  },
+  'crashpad/third_party/ninja/mac-amd64': {
+    'packages': [
+      {
+        'package': 'infra/3pp/tools/ninja/mac-amd64',
+        'version': Var('ninja_version'),
+      }
+    ],
+    'condition': 'host_os == "mac" and host_cpu == "amd64"',
+    'dep_type': 'cipd',
+  },
+  'crashpad/third_party/ninja/mac-arm64': {
+    'packages': [
+      {
+        'package': 'infra/3pp/tools/ninja/mac-arm64',
+        'version': Var('ninja_version'),
+      }
+    ],
+    'condition': 'host_os == "mac" and host_cpu == "arm64"',
+    'dep_type': 'cipd',
+  },
   'crashpad/third_party/win/toolchain': {
     # This package is only updated when the solution in .gclient includes an
     # entry like:

third_party/ninja/README.crashpad

@@ -0,0 +1,17 @@
+Name: ninja
+Short Name: ninja
+URL: https://github.com/ninja-build/ninja
+Revision: See the CIPD version in DEPS
+License: Apache License 2.0
+License File: https://github.com/ninja-build/ninja/blob/master/COPYING
+Security Critical: no
+
+Description:
+Ninja is a small build system with a focus on speed, and is used to build
+this project.
+
+The CIPD packages are built using the 3pp pipeline.
+https://chromium.googlesource.com/infra/infra/+/refs/heads/main/3pp/ninja/
+
+Local Modifications:
+None

third_party/ninja/ninja

@@ -0,0 +1,43 @@
+#!/bin/sh
+
+# Copyright 2022 Google Inc. All rights reserved
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+set -eu
+
+OS="$(uname -s)"
+THIS_DIR="$(dirname "${0}")"
+
+function print_help() {
+cat <<EOF >&2
+No ninja binary is available for this system.
+Try building your own binary by doing:
+  cd ~
+  git clone https://github.com/ninja-build/ninja.git
+  cd ninja && ./configure.py --bootstrap
+Then add ~/ninja/ to your PATH.
+EOF
+}
+
+case "${OS}" in
+  Linux)
+    exec "${THIS_DIR}/linux/ninja" "$@";;
+  Darwin)
+    ARCH="$(uname -m)"
+    case "${ARCH}" in
+      x86_64)
+        exec "${THIS_DIR}/mac-amd64/ninja" "$@";;
+      arm64)
+        exec "${THIS_DIR}/mac-arm64/ninja" "$@";;
+      *)
+        echo "Unsupported architecture ${ARCH}" >&2
+        print_help
+        exit 1;;
+    esac
+    ;;
+  *)
+    echo "Unsupported OS ${OS}" >&2
+    print_help
+    exit 1;;
+esac