C++ 11 enables containers that contain move-only type, scoped_ptr.
So, Use std::map<key, scoped_ptr<Foo>> instead of ScopedPtrMap.
Also use std::move() instead of scoped_ptr::Pass().
TBR=avi@chromium.org
BUG=554291, 557422
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel
Review URL: https://codereview.chromium.org/1458553006
Cr-Commit-Position: refs/heads/master@{#360745}