Remove StaticString ASSERTs

These ASSERTs are triggering on Windows.  This CL disables them while I investigate.

TBR=morrita@chromium.org

Review URL: https://codereview.chromium.org/21744002

git-svn-id: svn://svn.chromium.org/blink/trunk@155411 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Just a comment fix.
I looked into Typeref/Typedef more carefully
(I thought Type*r*ef was a typo for Type*d*ef),
and realized that it's not a typo, just confusing.
I've thus removed the FIXME and replaced it with a comment.

Typeref means "a typedef or interface type" (the parser
is context-free and can't tell the difference b/c it doesn't
do symbol resolution), i.e., a Type *Reference*.

I also fixed other comments, consistently using Type and Typedef only to refer to the actual productions in the grammar, and use "type" and "typedef" for the resulting semantics.

Review URL: https://chromiumcodereview.appspot.com/21524002

git-svn-id: svn://svn.chromium.org/blink/trunk@155412 bbb929c8-8fbe-4397-9dbb-9b2b20218538