Fix Chrome build for RecreateSKPs and CommandBuffer bots for GYP->GN

tools/build_command_buffer.py

 #!/usr/bin/python
 
 # Copyright 2016 Google Inc.
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 
 """
 Script to build the command buffer shared library and copy it to Skia tree
@@ skipping 112 matching lines @@
 
     try:
       os.environ['GYP_GENERATORS'] = 'ninja'
       subprocess.check_call([gclient, 'sync', '--reset', '--force'],
           cwd=chrome_src_dir)
     except subprocess.CalledProcessError as error:
       sys.exit('Error (ret code: %s) calling "%s" in %s' % (error.returncode,
           error.cmd, chrome_src_dir))
 
   try:
+    subprocess.check_call([gclient, 'runhooks'], cwd=chrome_src_dir)
+  except subprocess.CalledProcessError as error:
+    sys.exit('Error (ret code: %s) calling "%s" in %s' % (
+        error.returncode, error.cmd, chrome_src_dir))
+
+  platform = 'linux64'
+  if sys.platform == 'darwin':
+    platform = 'mac'
+  elif sys.platform == 'win32':
+    platform = 'win'
+  gn = os.path.join(chrome_src_dir, 'buildtools', platform, 'gn')

[jcgregorio, 2016/08/02 14:47:49]

Wouldn't that be gn.exe on Windows?

[borenet, 2016/08/02 15:11:56]

Good catch. Fixed in https://codereview.chromium.org/2207563002

+  try:
+    subprocess.check_call([gn, 'gen', chrome_target_dir_rel],
+                          cwd=chrome_src_dir)
+  except subprocess.CalledProcessError as error:
+    sys.exit('Error (ret code: %s) calling "%s" in %s' % (
+        error.returncode, error.cmd, chrome_src_dir))
+
+  try:
     subprocess.check_call(['ninja'] + shlex.split(args.extra_ninja_args) +
         ['-C', chrome_target_dir_rel, 'command_buffer_gles2'],
         cwd=chrome_src_dir)
   except subprocess.CalledProcessError as error:
     sys.exit('Error (ret code: %s) calling "%s" in %s' % (error.returncode,
         error.cmd, chrome_src_dir))
 
   shared_lib_src_dir = os.path.join(chrome_src_dir, chrome_target_dir_rel)
   shared_lib_dst_dir = os.path.join(args.output_dir, shared_lib_subdir)
   # Make the subdir for the dst if does not exist
@@ skipping 11 matching lines @@
 
   if not os.path.isfile(shared_lib_dst):
     sys.exit('Command buffer library not copied to ' + shared_lib_dst)
 
   print('Command buffer library copied to ' + shared_lib_dst)
 
 
 if __name__ == '__main__':
   main()