Add keys(), values() and entries() methods on iterable<> interfaces

Source/core/testing/Internals.h

Index: Source/core/testing/Internals.h
diff --git a/Source/core/testing/Internals.h b/Source/core/testing/Internals.h
index 7a729e215e033859336dde567db28dafd70f5a4c..9e6f2e1495145596222168b5c8bfc5b2d122054b 100644
--- a/Source/core/testing/Internals.h
+++ b/Source/core/testing/Internals.h
@@ -33,6 +33,7 @@
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "core/css/CSSComputedStyleDeclaration.h"
 #include "core/dom/ContextLifecycleObserver.h"
+#include "core/dom/Iterable.h"
 #include "core/page/scrolling/ScrollingCoordinator.h"
 #include "platform/heap/Handle.h"
 #include "wtf/PassRefPtr.h"
@@ -73,7 +74,7 @@ class UnionTypesTest;
 template <typename NodeType> class StaticNodeTypeList;
 typedef StaticNodeTypeList<Node> StaticNodeList;
 
-class Internals final : public GarbageCollectedFinalized<Internals>, public ScriptWrappable, public ContextLifecycleObserver {
+class Internals final : public GarbageCollectedFinalized<Internals>, public ScriptWrappable, public ContextLifecycleObserver, public ValueIterable<int> {
     DEFINE_WRAPPERTYPEINFO();
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(Internals);
 public:
@@ -338,8 +339,6 @@ public:
     void forcePluginPlaceholder(HTMLElement* plugin, PassRefPtrWillBeRawPtr<DocumentFragment>, ExceptionState&);
     void forcePluginPlaceholder(HTMLElement* plugin, const PluginPlaceholderOptions&, ExceptionState&);
 
-    Iterator* iterator(ScriptState*, ExceptionState&);
-
     // Scheudle a forced Blink GC run (Oilpan) at the end of event loop.
     // Note: This is designed to be only used from PerformanceTests/BlinkGC to explicitly measure only Blink GC time.
     //       Normal LayoutTests should use gc() instead as it would trigger both Blink GC and V8 GC.
@@ -354,6 +353,8 @@ private:
 
     DocumentMarker* markerAt(Node*, const String& markerType, unsigned index, ExceptionState&);
     Member<InternalRuntimeFlags> m_runtimeFlags;
+
+    IterationSource* startIteration(ScriptState*, ExceptionState&) override;
 };
 
 } // namespace blink