https://bugs.webkit.org/show_bug.cgi?id=113448

Patch by Scott Graham <scottmg@chromium.org> on 2013-03-28
Reviewed by Tony Chang.

Moves the preprocessor invocations when parsing IDL files to a
pre-pass to avoid reinvocations when IDLs are referenced from others.
This reduces the number of invocations of the preprocessor from 20071
to 633, which reduces the runtime from 12m30 to 1m (on a Windows box).

No new tests, this is a build time improvement, and shouldn't have any
visible effect.

* WebCore.gyp/WebCore.gyp:
* bindings/scripts/CodeGenerator.pm:
(ParseInterface):
* bindings/scripts/IDLParser.pm:
(Parse):
* bindings/scripts/generate-bindings.pl:
* bindings/scripts/generate-preprocessed-idls.pl: Added.
* bindings/scripts/preprocessor.pm:
(applyPreprocessor):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@147130 268f45cc-cd09-0410-ab3c-d52691b4dbfc