XWalkChannel test cases.
XWalkChannel test cases.

As addUserScript() take times, if we'd like to access the javascript
objects injected with the addUserScript(), we have to wait untill the
document loading completed, or in didCommitNavigation() as early as
possible.

ericzhou2008/crosswalk-ios,hgl888/crosswalk-ios,jondong/crosswalk-ios,negherbon/crosswalk-ios,RafuCater/crosswalk-ios,crosswalk-project/crosswalk-ios,RafuCater/crosswalk-ios,mattWillis/crosswalk-ios,negherbon/crosswalk-ios,crosswalk-project/crosswalk-ios,hgl888/crosswalk-ios,minggangw/crosswalk-ios,jondong/crosswalk-ios,negherbon/crosswalk-ios,ericzhou2008/crosswalk-ios,negherbon/crosswalk-ios,mattWillis/crosswalk-ios,ericzhou2008/crosswalk-ios,minggangw/crosswalk-ios,jondong/crosswalk-ios,minggangw/crosswalk-ios,hgl888/crosswalk-ios,mattWillis/crosswalk-ios,RafuCater/crosswalk-ios,minggangw/crosswalk-ios,hgl888/crosswalk-ios,crosswalk-project/crosswalk-ios,jondong/crosswalk-ios,ericzhou2008/crosswalk-ios,mattWillis/crosswalk-ios,RafuCater/crosswalk-ios,crosswalk-project/crosswalk-ios