DevTools: fix presubmit hooks for windows

third_party/WebKit/Source/devtools/scripts/lint_javascript.py

 #!/usr/bin/env python
 #
 # Copyright 2016 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.
 
 import os.path as path
 import re
 import subprocess
 import sys
@@ skipping 11 matching lines @@
         sys.exit(0)
 
     else:
         print("Linting only these files:\n %s" % sys.argv[1:])
         files_to_lint = sys.argv[1:]
 
 
 is_cygwin = sys.platform == "cygwin"
 
 
-def popen(arguments):
-    return subprocess.Popen(arguments, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+def popen(arguments, cwd=None):
+    return subprocess.Popen(arguments, cwd=cwd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
 
 
 def to_platform_path(filepath):
     if not is_cygwin:
         return filepath
     return re.sub(r"^/cygdrive/(\w)", "\\1:", filepath)
 
 
 def to_platform_path_exact(filepath):
     if not is_cygwin:
         return filepath
     output, _ = popen(["cygpath", "-w", filepath]).communicate()
     # pylint: disable=E1103
     return output.strip().replace("\\", "\\\\")
 
 scripts_path = path.dirname(path.abspath(__file__))
 devtools_path = path.dirname(scripts_path)
 devtools_frontend_path = path.join(devtools_path, "front_end")
-eslint_path = path.join(devtools_path, "node_modules", ".bin", "eslint")
+eslint_path = path.join(devtools_path, "node_modules", "eslint", "bin", "eslint.js")
 
 print("Linting JavaScript with eslint...\n")
 
 
 def js_lint(files_list=None):
     eslint_errors_found = False
     if not path.isfile(eslint_path):
         print("Failed to run eslint, run ./scripts/install_node_deps.py to install eslint")
         eslint_errors_found = True
         return eslint_errors_found
 
     if files_list is None:
         files_list = [devtools_frontend_path]
     files_list = [file_name for file_name in files_list if not file_name.endswith(".eslintrc.js")]
 
     eslintconfig_path = path.join(devtools_path, ".eslintrc.js")
     eslintignore_path = path.join(devtools_path, ".eslintignore")
     (node_path, _) = install_node_deps.resolve_node_paths()
     exec_command = [
         node_path,
         eslint_path,
         "--config", to_platform_path_exact(eslintconfig_path),
         "--ignore-path", to_platform_path_exact(eslintignore_path),
     ] + files_list
 
-    eslint_proc = popen(exec_command)
+    eslint_proc = popen(exec_command, cwd=devtools_path)
     (eslint_proc_out, _) = eslint_proc.communicate()
     if eslint_proc.returncode != 0:
         eslint_errors_found = True
     else:
         print("eslint exited successfully")
 
     print(eslint_proc_out)
     return eslint_errors_found
 
 
 errors_found = js_lint(files_to_lint)
 
 if errors_found:
     print("ERRORS DETECTED")
     sys.exit(1)