Web Animations: Remove activeDuration

This was removed from the spec [1] in favor of endDelay.

[1] https://github.com/web-animations/web-animations-spec/commit/d00254dd8a79ae5f06b3db144f37302bda4f69ce
NOTRY=true
BUG=335350

Review URL: https://codereview.chromium.org/180163003

git-svn-id: svn://svn.chromium.org/blink/trunk@168263 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Eliminate InterfaceDependencies.txt

InterfaceDependencies.txt was used by Perl.
This is no longer necessary in Python, as we pickle
(which is faster and avoids having ad hoc reading/writing).

R=haraken
BUG=341748

Review URL: https://codereview.chromium.org/180273009

git-svn-id: svn://svn.chromium.org/blink/trunk@168264 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: specify trace event filter when installing trace callback

BUG=
R=pfeldman@chromium.org

Review URL: https://codereview.chromium.org/184043004

git-svn-id: svn://svn.chromium.org/blink/trunk@168265 bbb929c8-8fbe-4397-9dbb-9b2b20218538