Move gyp-win-tool to the GN Windows toolchain.

build/toolchain/win/setup_toolchain.py

Index: build/toolchain/win/setup_toolchain.py
diff --git a/build/toolchain/win/setup_toolchain.py b/build/toolchain/win/setup_toolchain.py
index 0d0975dfe3a6444719fea252becfd87b37448069..a91043710d58befb140d0aa12437e331c46e9adf 100644
--- a/build/toolchain/win/setup_toolchain.py
+++ b/build/toolchain/win/setup_toolchain.py
@@ -46,7 +46,7 @@ def _ExtractImportantEnvironment(output_of_set):
       if re.match(envvar + '=', line.lower()):
         var, setting = line.split('=', 1)
         if envvar == 'path':
-          # Our own rules (for running gyp-win-tool) and other actions in
+          # Our own rules (for running tool_wrapper.py) and other actions in
           # Chromium rely on python being in the path. Add the path to this
           # python here so that if it's not in the path when ninja is run
           # later, python will still be found.
@@ -147,45 +147,16 @@ def _FormatAsEnvironmentBlock(envvar_dict):
   return block
 
 
-def _CopyTool(source_path):
-  """Copies the given tool to the current directory, including a warning not
-  to edit it."""
-  with open(source_path) as source_file:
-    tool_source = source_file.readlines()
-
-  # Add header and write it out to the current directory (which should be the
-  # root build dir). Don't write the file if a matching file already exists
-  # because that causes a cascade of unnecessary rebuilds.
-  match = False
-  contents = ''.join([tool_source[0],
-                      '# Generated by setup_toolchain.py do not edit.\n']
-                     + tool_source[1:])
-  out_path = 'gyp-win-tool'
-  try:
-    with open(out_path, 'rb') as read_tool_file:
-      existing_contents = read_tool_file.read()
-    if existing_contents == contents:
-      match = True
-  except:
-    pass
-  if not match:
-    with open(out_path, 'wb') as write_tool_file:
-      write_tool_file.write(contents)
-
-
 def main():
-  if len(sys.argv) != 7:
+  if len(sys.argv) != 6:
     print('Usage setup_toolchain.py '
-          '<visual studio path> <win tool path> <win sdk path> '
+          '<visual studio path> <win sdk path> '
           '<runtime dirs> <target_cpu> <include prefix>')
     sys.exit(2)
-  tool_source = sys.argv[2]
-  win_sdk_path = sys.argv[3]
-  runtime_dirs = sys.argv[4]
-  target_cpu = sys.argv[5]
-  include_prefix = sys.argv[6]
-
-  _CopyTool(tool_source)
+  win_sdk_path = sys.argv[2]
+  runtime_dirs = sys.argv[3]
+  target_cpu = sys.argv[4]
+  include_prefix = sys.argv[5]
 
   cpus = ('x86', 'x64')
   assert target_cpu in cpus