IDL compiler: [PerWorldBindings] with arguments and [ActivityLogging]

Add logic for handling signature (just ->Set change),
and tests for [ActivityLogging] (logic already there).

Followup to:
IDL compiler: [PerWorldBindings] methods :: basic
https://codereview.chromium.org/63633003/

BUG=239771
NOTRY=true

Review URL: https://codereview.chromium.org/63603006

git-svn-id: svn://svn.chromium.org/blink/trunk@161580 bbb929c8-8fbe-4397-9dbb-9b2b20218538