Support window.parent in the one-window case.
Throw a TypeError when a non-object is passed where one is expected.
Bump submodule ptr to allow ndk-gdb debugging.
Merge pull request #2964 from glennw/servo-glue

Bump submodule ptr to allow ndk-gdb debugging on android.
Merge pull request #2961 from Ms2ger/non-object-throw

Throw a TypeError when a non-object is passed where one is expected; r=jdm
Sort MANIFEST.json.

This avoids spurious changes when updating it.
Update update_manifest() for upstream changes.
Update web-platform-tests.
Merge pull request #2958 from Ms2ger/update-wpt

Update web-platform-tests; r=Manishearth
Merge pull request #2948 from jgraham/window_parent

Support window.parent in the one-window case; r=Ms2ger