v8binding: Implements an alternative of WindowProxy.[[DefineOwnProperty]].

third_party/WebKit/Source/core/frame/DOMWindow.h

Index: third_party/WebKit/Source/core/frame/DOMWindow.h
diff --git a/third_party/WebKit/Source/core/frame/DOMWindow.h b/third_party/WebKit/Source/core/frame/DOMWindow.h
index d7e3bc1062d41863beddac26fbcbd48f21dc39cc..877e1463b955cffd28726dd79d30bb7c5378969f 100644
--- a/third_party/WebKit/Source/core/frame/DOMWindow.h
+++ b/third_party/WebKit/Source/core/frame/DOMWindow.h
@@ -18,9 +18,10 @@ namespace blink {
 
 class Document;
 class InputDeviceCapabilitiesConstants;
-class Location;
 class LocalDOMWindow;
+class Location;
 class MessageEvent;
+class ScriptValue;
 class SerializedScriptValue;
 
 class CORE_EXPORT DOMWindow : public EventTargetWithInlineData,
@@ -82,10 +83,9 @@ class CORE_EXPORT DOMWindow : public EventTargetWithInlineData,
   virtual void blur() = 0;
   void close(ExecutionContext*);
 
-  // FIXME: This handles both window[index] and window.frames[index]. However,

[haraken, 2017/04/14 18:50:06]

Did you remove this comment because it's out-dated?

[Yuki, 2017/04/17 05:30:31]

Yes, the comment is out-dated and no longer correct.
|window| and |window.frames| are the same thing in the current spec.

-  // the spec exposes window.frames[index] across origins but not
-  // window[index]...
-  DOMWindow* AnonymousIndexedGetter(uint32_t) const;
+  // Indexed properties
+  DOMWindow* AnonymousIndexedGetter(uint32_t index) const;
+  bool AnonymousIndexedSetter(uint32_t index, const ScriptValue&);
 
   void postMessage(PassRefPtr<SerializedScriptValue> message,
                    const MessagePortArray&,