Remove unnecessary workaround on interpolation-test after bug fixed on animation

BUG=279039

Review URL: https://codereview.chromium.org/142393005

git-svn-id: svn://svn.chromium.org/blink/trunk@167086 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: Switch heap profiler to using SplitView

R=loislo@chromium.org

Review URL: https://codereview.chromium.org/156883003

git-svn-id: svn://svn.chromium.org/blink/trunk@167087 bbb929c8-8fbe-4397-9dbb-9b2b20218538