IDL: Autogenerate thunk for PPB_Gamepad.

IDL: Autogenerate thunk for PPB_Gamepad.

This required adding two features to the thunk generator.
  * Support for a 'singleton_resource' annotation, which forces the use of
    EnterInstanceAPI.
  * When a function fails in the thunk layer, and it returns void,
    automatically zero out the output arguments. This will probably have to be
    moved to an annotation later, but seems like a good heuristic for now.

BUG=187666
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=191477

[dmichael (off chromium), 2013-03-28 22:11:21]

lgtm

https://codereview.chromium.org/13142007/diff/1/ppapi/generators/idl_thunk.py
File ppapi/generators/idl_thunk.py (right):

https://codereview.chromium.org/13142007/diff/1/ppapi/generators/idl_thunk.py...
ppapi/generators/idl_thunk.py:101: # Clip off _dev suffix.
nit: _trusted (or just remove the comment)

[commit-bot: I haz the power, 2013-03-29 14:41:29]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/teravest@chromium.org/13142007/5001

[teravest, 2013-03-29 14:41:36]

On Thu, Mar 28, 2013 at 4:11 PM,  <dmichael@chromium.org> wrote:
> lgtm
>
>
>
>
> https://codereview.chromium.org/13142007/diff/1/ppapi/generators/idl_thunk.py
> File ppapi/generators/idl_thunk.py (right):
>
>
https://codereview.chromium.org/13142007/diff/1/ppapi/generators/idl_thunk.py...
> ppapi/generators/idl_thunk.py:101: # Clip off _dev suffix.
> nit: _trusted (or just remove the comment)

Done.

>
> https://codereview.chromium.org/13142007/

[commit-bot: I haz the power, 2013-03-30 00:13:26]

Change committed as 191477