GitLab

After discussions w/ Moz and spec updates, modify the experimental
(behind a flag) IDBObjectStore/IDBIndex getAll()/getAllKeys() methods
to treat 0 the same as "not passed", and return as many results as
possible.

Also adds missing tests for IDBObjectStore.getAllKeys() and tweaks
the tests to avoid the deprecated assert_object_equals() function.

R=cmumford@chromium.org

Review URL: https://codereview.chromium.org/1303983002

git-svn-id: svn://svn.chromium.org/blink/trunk@200999 bbb929c8-8fbe-4397-9dbb-9b2b20218538