Introduce V8XXX::findInstanceInPrototypeChain

This CL introduces V8XXX::findInstanceInPrototypeChain(), which is similar to V8XXX::hasInstance().
The difference is whether the method looks up a prototype chain to find the instance.
When using V8XXX::findInstanceInPrototypeChain() we don't worry about world type,
so it's less error-prone than using xxx->FindInstaceInPrototypeChain(domTemplate(..., worldType())).

The real intention of this CL is removing call sites of domTemplate(..., worldType()).

BUG=341032

Review URL: https://codereview.chromium.org/179873003

git-svn-id: svn://svn.chromium.org/blink/trunk@167879 bbb929c8-8fbe-4397-9dbb-9b2b20218538