binding: Uses the relevant realm instead of the current realm (1 of ?)

third_party/WebKit/Source/bindings/core/v8/ScriptState.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ScriptState_h
 #define ScriptState_h
 
 #include "bindings/core/v8/ScopedPersistent.h"
 #include "bindings/core/v8/V8PerContextData.h"
 #include "core/CoreExport.h"
@@ skipping 39 matching lines @@
     };
 
     static PassRefPtr<ScriptState> create(v8::Local<v8::Context>, PassRefPtr<DOMWrapperWorld>);
     virtual ~ScriptState();
 
     static ScriptState* current(v8::Isolate* isolate)
     {
         return from(isolate->GetCurrentContext());
     }
 
+    static ScriptState* forThisObject(const v8::FunctionCallbackInfo<v8::Value>& info)

[haraken, 2016/07/22 09:51:01]

Nit: 'This' object sounds a bit too vague. I'd prefer 'Holder' object or
'Receiver' object.

[Yuki, 2016/07/22 10:11:02]

Good point.  Agreed.  Let's name this "forHolderObject".

+    {
+        return from(info.Holder()->CreationContext());
+    }
+
+    static ScriptState* forThisObject(const v8::PropertyCallbackInfo<v8::Value>& info)
+    {
+        return from(info.Holder()->CreationContext());
+    }
+
     // Debugger context doesn't have associated ScriptState and when current
     // context is debugger it should be treated as if context stack was empty.
     static bool hasCurrentScriptState(v8::Isolate* isolate)
     {
         v8::HandleScope scope(isolate);
         v8::Local<v8::Context> context = isolate->GetCurrentContext();
         if (context.IsEmpty())
             return false;
         return context != v8::Debug::GetDebugContext(isolate);
     }
@@ skipping 78 matching lines @@
     }
 
 private:
     RefPtr<ScriptState> m_scriptState;
     ScopedPersistent<v8::Context> m_context;
 };
 
 } // namespace blink
 
 #endif // ScriptState_h