[e] (0) Try to clarify use of the term 'expose' in the WebIDL sense.
Affected topics: DOM APIs, HTML, Workers

git-svn-id: http://svn.whatwg.org/webapps@7851 340c8d12-0b0e-0410-8428-c7bf67bfef74
[e] (0) Remove redundant requirements.
Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=21335
Affected topics: DOM APIs, HTML, Workers

git-svn-id: http://svn.whatwg.org/webapps@7852 340c8d12-0b0e-0410-8428-c7bf67bfef74