Bug 545407 Remove code that disables DNS pre-fetching for APP_TYPE_MAIL/EDITOR docshells (in favour of letting it be managed by app specific policies). r=bzbarsky

docshell/base/nsDocShell.cpp

@@ -1962,9 +1962,6 @@ NS_IMETHODIMP
 nsDocShell::SetAppType(PRUint32 aAppType)
 {
     mAppType = aAppType;
-    if (mAppType == APP_TYPE_MAIL || mAppType == APP_TYPE_EDITOR) {
-        SetAllowDNSPrefetch(PR_FALSE);
-    }
     return NS_OK;
 }