Bug 1182569: Use AsyncOpen2 for docshell loads. r=smaug

docshell/base/nsDocShell.cpp

@@ -68,7 +68,6 @@
 #include "nsIScriptSecurityManager.h"
 #include "nsIScriptObjectPrincipal.h"
 #include "nsIScrollableFrame.h"
-#include "nsContentPolicyUtils.h" // NS_CheckContentLoadPolicy(...)
 #include "nsISeekableStream.h"
 #include "nsAutoPtr.h"
 #include "nsQueryObject.h"
@@ -1633,7 +1632,7 @@ nsDocShell::LoadStream(nsIInputStream* aStream, nsIURI* aURI,
                                          uri,
                                          aStream,
                                          triggeringPrincipal,
-                                         nsILoadInfo::SEC_NORMAL,
+                                         nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_DATA_IS_NULL,
                                          nsIContentPolicy::TYPE_OTHER,
                                          aContentType,
                                          aContentCharset);
@@ -9866,23 +9865,6 @@ nsDocShell::InternalLoad(nsIURI* aURI,
 #endif
     }
 
-    int16_t shouldLoad = nsIContentPolicy::ACCEPT;
-    rv = NS_CheckContentLoadPolicy(contentType,
-                                   aURI,
-                                   aTriggeringPrincipal,
-                                   requestingContext,
-                                   EmptyCString(),  // mime guess
-                                   nullptr,  // extra
-                                   &shouldLoad);
-
-    if (NS_FAILED(rv) || NS_CP_REJECTED(shouldLoad)) {
-      if (NS_SUCCEEDED(rv) && shouldLoad == nsIContentPolicy::REJECT_TYPE) {
-        return NS_ERROR_CONTENT_BLOCKED_SHOW_ALT;
-      }
-
-      return NS_ERROR_CONTENT_BLOCKED;
-    }
-
     // If HSTS priming was set by nsMixedContentBlocker::ShouldLoad, and we
     // would block due to mixed content, go ahead and block here. If we try to
     // proceed with priming, we will error out later on.
@@ -10881,7 +10863,8 @@ nsDocShell::DoURILoad(nsIURI* aURI,
   }
 
   nsLoadFlags loadFlags = mDefaultLoadFlags;
-  nsSecurityFlags securityFlags = nsILoadInfo::SEC_NORMAL;
+  nsSecurityFlags securityFlags =
+    nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_DATA_IS_NULL;
 
   if (aFirstParty) {
     // tag first party URL loads