Add check_build_deps step to gclient runhooks

DEPS

 # This file is used to manage the dependencies of the Chromium src repo. It is
 # used by gclient to determine what version of each dependency to check out, and
 # where.
 #
 # For more information, please refer to the official documentation:
 #   https://sites.google.com/a/chromium.org/dev/developers/how-tos/get-the-code
 #
 # When adding a new dependency, please update the top-level .gitignore file
 # to list the dependency's destination directory.
 #
@@ skipping 519 matching lines @@
     # first hook so that other things that get/generate into the output
     # directory will not subsequently be clobbered.
     'name': 'landmines',
     'pattern': '.',
     'action': [
         'python',
         'src/build/landmines.py',
     ],
   },
   {
+    # Ensure the host environment has the necessary packages required to build
+        # Chromium.
+        'name': 'check_build_deps',
+        'pattern': '.',
+        'action': [
+        'python',
+        'src/build/check-build-deps.py',
+    ],
+  },
+  {
     # Ensure that while generating dependencies lists in .gyp files we don't
     # accidentally reference any .pyc files whose corresponding .py files have
     # already been deleted.
     # We should actually try to avoid generating .pyc files, crbug.com/500078.
     'name': 'remove_stale_pyc_files',
     'pattern': '.',
     'action': [
         'python',
         'src/tools/remove_stale_pyc_files.py',
         'src/android_webview/tools',
@@ skipping 504 matching lines @@
 ]
 
 recursedeps = [
   # buildtools provides clang_format, libc++, and libc++abi
   'src/buildtools',
   # android_tools manages the NDK.
   'src/third_party/android_tools',
   # ANGLE manages DEPS that it also owns the build files for, such as dEQP.
   ("src/third_party/angle", "DEPS.chromium"),
 ]