Fix webview license scan for clang

android_webview/tools/webview_licenses.py

 #!/usr/bin/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.
 
 """Checks third-party licenses for the purposes of the Android WebView build.
 
 The Android tree includes a snapshot of Chromium in order to power the system
 WebView.  This tool checks that all code uses open-source licenses compatible
 with Android, and that we meet the requirements of those licenses. It can also
@@ skipping 98 matching lines @@
   # This is a test output directory.
   directory_list.append('data/page_cycler/')
   # 'Copyright' appears in strings.
   directory_list.append('chrome/app/resources/')
   # This is a Chrome on Linux reference build, doesn't exist in the snapshot
   directory_list.append('chrome/tools/test/reference_build/chrome_linux/')
   # Remoting internal tools, doesn't exist in the snapshot
   directory_list.append('remoting/appengine/')
   # Histogram tools, doesn't exist in the snapshot
   directory_list.append('tools/histograms/')
-  # Ignore clang builders.
-  directory_list.append('third_party/llvm-build/')
 
   # Exclude files under listed directories and some known offenders.
   offending_files = []
   for x in files:
     x = os.path.normpath(x)
     is_in_listed_directory = False
     for y in directory_list:
       if x.startswith(y):
         is_in_listed_directory = True
         break
@@ skipping 37 matching lines @@
   """
 
   prune_paths = [
     # Placeholder directory, no third-party code.
     os.path.join('third_party', 'adobe'),
     # Apache 2.0 license. See
     # https://code.google.com/p/chromium/issues/detail?id=140478.
     os.path.join('third_party', 'bidichecker'),
     # Isn't checked out on clients
     os.path.join('third_party', 'gles2_conform'),
+    # The llvm-build doesn't exist for non-clang builder
+    os.path.join('third_party', 'llvm-build'),
   ]
   return licenses.FindThirdPartyDirs(prune_paths)
 
 
 def _Scan():
   """Checks that license meta-data is present for all third-party code.
   Returns:
     Whether the check succeeded.
   """
 
@@ skipping 73 matching lines @@
       return 1
   elif args[0] == 'notice':
     print GenerateNoticeFile()
     return 0
 
   parser.print_help()
   return 1
 
 if __name__ == '__main__':
   sys.exit(main())