Add free space print to see how near edge bots are

build/gyp_chromium

 #!/usr/bin/env python
 
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # This script is wrapper for Chromium that adds some support for how GYP
 # is invoked by Chromium beyond what can be done in the gclient hooks.
 
+import ctypes
 import glob
 import gyp_helper
 import json
 import os
 import pipes
 import shlex
 import shutil
 import subprocess
 import string
 import sys
@@ skipping 366 matching lines @@
   if os.path.exists(out_release) and not os.path.exists(out_release_nacl64):
     os.makedirs(out_release_nacl64)
   copy_runtime(out_debug,          x86, 'msvc%s120d.dll')
   copy_runtime(out_release,        x86, 'msvc%s120.dll')
   copy_runtime(out_debug_x64,      x64, 'msvc%s120d.dll')
   copy_runtime(out_release_x64,    x64, 'msvc%s120.dll')
   copy_runtime(out_debug_nacl64,   x64, 'msvc%s120d.dll')
   copy_runtime(out_release_nacl64, x64, 'msvc%s120.dll')
 
 
+def GetFreeSpaceMBWindows(path):
+  """Returns the number of mebibytes free for a given directory."""
+  free_bytes = ctypes.c_ulonglong(0)
+  ctypes.windll.kernel32.GetDiskFreeSpaceExW(
+      ctypes.c_wchar_p(path), None, None, ctypes.pointer(free_bytes))
+  return free_bytes.value / 1024 / 1024
+
+
 if __name__ == '__main__':
   args = sys.argv[1:]
 
   if int(os.environ.get('GYP_CHROMIUM_NO_ACTION', 0)):
     print 'Skipping gyp_chromium due to GYP_CHROMIUM_NO_ACTION env var.'
     sys.exit(0)
 
   # Use the Psyco JIT if available.
   if psyco:
     psyco.profile()
@@ skipping 103 matching lines @@
     # values there.
     gyp_defines_dict = gyp.NameValueListToDict(gyp.ShlexEnv('GYP_DEFINES'))
     gyp_defines_dict['windows_sdk_path'] = win8sdk
     os.environ['GYP_DEFINES'] = ' '.join('%s=%s' % (k, pipes.quote(str(v)))
         for k, v in gyp_defines_dict.iteritems())
     os.environ['WINDOWSSDKDIR'] = win8sdk
     os.environ['WDK_DIR'] = wdk
     # Include the VS runtime in the PATH in case it's not machine-installed.
     runtime_path = ';'.join(vs2013_runtime_dll_dirs)
     os.environ['PATH'] = runtime_path + ';' + os.environ['PATH']
-    print('Using automatic toolchain in %s (%s edition).' % (
-              toolchain, 'Pro' if version_is_pro else 'Express'))
+    # TODO(scottmg): Temporarily add free space print to try to see how close
+    # we're getting to failures on windows bots. http://crbug.com/348350
+    print('Using automatic toolchain in %s (%s edition), free space: %dM.' % (
+              toolchain,
+              'Pro' if version_is_pro else 'Express',
+              GetFreeSpaceMBWindows(GetOutputDirectory())))
 
   # If CHROMIUM_GYP_SYNTAX_CHECK is set to 1, it will invoke gyp with --check
   # to enfore syntax checking.
   syntax_check = os.environ.get('CHROMIUM_GYP_SYNTAX_CHECK')
   if syntax_check and int(syntax_check):
     args.append('--check')
 
   supplemental_includes = GetSupplementalFiles()
   gn_vars_dict = GetGypVarsForGN(supplemental_includes)
 
@@ skipping 24 matching lines @@
   print 'Running build/landmines.py...'
   subprocess.check_call(
       [sys.executable, os.path.join(script_dir, 'landmines.py')])
 
   if vs2013_runtime_dll_dirs:
     x64_runtime, x86_runtime = vs2013_runtime_dll_dirs
     CopyVsRuntimeDlls(os.path.join(chrome_src, GetOutputDirectory()),
                       (x86_runtime, x64_runtime))
 
   sys.exit(gyp_rc)