Binding: Remove an unnecessary object template from the inner global object
Binding: Remove an unnecessary object template from the inner global object

Currently the inner global object has two object templates -- one for the main
world and the other for non-main worlds. However, we don't need to distinguish
the two object templates since the inner global object doesn't install
any DOM attribute/method.

BUG=509936

Review URL: https://codereview.chromium.org/1270603002

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@199771 bbb929c8-8fbe-4397-9dbb-9b2b20218538

Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk