Rebase over PolicyContainter

fetch.bs

@@ -1901,8 +1901,10 @@ source of security bugs. Please seek security review for features that deal with
 
  <li><p>If <var>request</var>'s <a for=request>client</a> is null, return true.</p>
 
- <li><p>If <var>request</var>'s <a for=request>client</a>'s <a for="environment settings object">embedder policy</a>
- is not "<code><a for="embedder policy value">credentialless</a></code>", return true.</p>
+ <li><p>If <var>request</var>'s <a for=request>client</a>'s
+ <a for="environment settings object">policy container</a>'s
+ <a for="policy container">embedder policy</a> is not
+ "<code><a for="embedder policy value">credentialless</a></code>", return true.</p>
 
  <li><p>If <var>request</var>'s <a for=request>origin</a> is <a>same origin</a> with
  <var>request</var>'s <a for=request>current URL</a>'s <a for=url>origin</a> and