IDL compiler: Always include headers for type in Python, one any => object

Fixes 10 files (50 => 40):
* Always include headers for type in Python (followup to Perl change):
IDL compiler: Fix types on [Custom] methods
https://codereview.chromium.org/143523016/

* One use of 'any' to mean "generic object" (should be 'object'), hence
unnecessary include.

BUG=239771
R=haraken

Review URL: https://codereview.chromium.org/146973004

git-svn-id: svn://svn.chromium.org/blink/trunk@166378 bbb929c8-8fbe-4397-9dbb-9b2b20218538