Checking out new IDL files

Project contains copies of Chromium IDL files in the idl directory.

The original files are from:

URL: https://src.chromium.org/chrome/trunk/src/chrome/common/extensions/api

Current revision: 231514

To update:

$ rm -rf idl
$ svn co https://src.chromium.org/chrome/trunk/src/chrome/common/extensions/api
$ mv api idl
$ update the svn revision above
$ dart tool/gen_apis.dart

• ensure that the generated code looks good!

Please see the corresponding LICENSE file