Add linux3 build support to chromium (base repository)

chrome/common/extensions/docs/build/build.py

 #!/usr/bin/python
 # Copyright (c) 2009 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.
 
 """Docbuilder for extension docs."""
 
 import os
 import os.path
 import shutil
@@ skipping 111 matching lines @@
 
   search_locations = []
 
   if (sys.platform in ('cygwin', 'win32')):
     home_dir = os.path.normpath(os.getenv("HOMEDRIVE") + os.getenv("HOMEPATH"))
     search_locations.append(chrome_dir + "/Release/DumpRenderTree.exe")
     search_locations.append(chrome_dir + "/Debug/DumpRenderTree.exe")
     search_locations.append(home_dir + "/bin/DumpRenderTree/"
                             "DumpRenderTree.exe")
 
-  if (sys.platform in ('linux', 'linux2')):
+  if (sys.platform.startswith('linux')):
     search_locations.append(src_dir + "/sconsbuild/Release/DumpRenderTree")
     search_locations.append(src_dir + "/out/Release/DumpRenderTree")
     search_locations.append(src_dir + "/sconsbuild/Debug/DumpRenderTree")
     search_locations.append(src_dir + "/out/Debug/DumpRenderTree")
     search_locations.append(os.getenv("HOME") + "/bin/DumpRenderTree/"
                             "DumpRenderTree")
 
   if (sys.platform == 'darwin'):
     search_locations.append(src_dir +
         "/xcodebuild/Release/DumpRenderTree.app/Contents/MacOS/DumpRenderTree")
@@ skipping 92 matching lines @@
   if (os.path.isfile(debug_log)):
     os.remove(debug_log)
 
   if 'EX_OK' in dir(os):
     return os.EX_OK
   else:
     return 0
 
 if __name__ == '__main__':
   sys.exit(main())