Roll IDL to multivm@576

third_party/WebCore/dom/Document.idl

Index: third_party/WebCore/dom/Document.idl
diff --git a/third_party/WebCore/dom/Document.idl b/third_party/WebCore/dom/Document.idl
index 4e4b7e3bfe1b1fc9cdb324fe9d8b4715b1debc07..b922ca6a08839240305063fe0e9061877e7fdd07 100644
--- a/third_party/WebCore/dom/Document.idl
+++ b/third_party/WebCore/dom/Document.idl
@@ -141,7 +141,7 @@ module core {
         boolean            queryCommandIndeterm(in [Optional=DefaultIsUndefined] DOMString command);
         boolean            queryCommandState(in [Optional=DefaultIsUndefined] DOMString command);
         boolean            queryCommandSupported(in [Optional=DefaultIsUndefined] DOMString command);
-        [TreatReturnedNullStringAs=False] DOMString queryCommandValue(in [Optional=DefaultIsUndefined] DOMString command);
+        DOMString          queryCommandValue(in [Optional=DefaultIsUndefined] DOMString command);
 
         // Moved down from HTMLDocument
 
@@ -253,7 +253,9 @@ module core {
         [V8EnabledAtRuntime] void webkitExitFullscreen();
 #endif
 
+#if defined(ENABLE_CSS_REGIONS) && ENABLE_CSS_REGIONS
         WebKitNamedFlow webkitGetFlowByName(in DOMString name);
+#endif
 
 #if !defined(LANGUAGE_OBJECTIVE_C) || !LANGUAGE_OBJECTIVE_C
         // Event handler DOM attributes