Mojo: Reformat parser_unittest.py.

Mojo: Reformat parser_unittest.py.

I guess this these are parser tests, and whitespace will be eaten by the
lexer. So I may as well make the tests kind of readable.

Also:
* Fix line number reporting (and snippet generation) for fixed size
  array error reporting (we only get line numbers for things from the
  lexer).
* Rename foos in parser.py to foo_list, for increased visibility.
* A few more small style fixes.

R=jamesr@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=281069

[jamesr, 2014-07-02 17:36:29]

lgtm

https://codereview.chromium.org/366873007/diff/1/mojo/public/tools/bindings/p...
File mojo/public/tools/bindings/pylib/mojom/parse/ast.py (right):

https://codereview.chromium.org/366873007/diff/1/mojo/public/tools/bindings/p...
mojo/public/tools/bindings/pylib/mojom/parse/ast.py:20: 
is this what the pep8 formatter would do?

[viettrungluu, 2014-07-02 17:59:04]

Thanks.

https://codereview.chromium.org/366873007/diff/1/mojo/public/tools/bindings/p...
File mojo/public/tools/bindings/pylib/mojom/parse/ast.py (right):

https://codereview.chromium.org/366873007/diff/1/mojo/public/tools/bindings/p...
mojo/public/tools/bindings/pylib/mojom/parse/ast.py:20: 
On 2014/07/02 17:36:29, jamesr wrote:
> is this what the pep8 formatter would do?

I think so. It'd probably also put a blank line before BaseNode's __init__.
Maybe I'll also add a docstring for BaseNode.

[viettrungluu, 2014-07-02 18:10:43]

The CQ bit was checked by viettrungluu@chromium.org

[commit-bot: I haz the power, 2014-07-02 18:11:53]

CQ is trying da patch. Follow status at

https://chromium-status.appspot.com/cq/viettrungluu@chromium.org/366873007/20001

[viettrungluu, 2014-07-02 19:24:39]

Committed patchset #2 manually as r281069 (presubmit successful).