Pass the old and new owner documents to the adoptedCallback.

third_party/WebKit/Source/bindings/core/v8/ScriptCustomElementDefinition.cpp

Index: third_party/WebKit/Source/bindings/core/v8/ScriptCustomElementDefinition.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/ScriptCustomElementDefinition.cpp b/third_party/WebKit/Source/bindings/core/v8/ScriptCustomElementDefinition.cpp
index 389e73138753f140bd984e14be476c85357406f1..62ee2a871ebc48219dccf45f93934a8d23001016 100644
--- a/third_party/WebKit/Source/bindings/core/v8/ScriptCustomElementDefinition.cpp
+++ b/third_party/WebKit/Source/bindings/core/v8/ScriptCustomElementDefinition.cpp
@@ -356,13 +356,19 @@ void ScriptCustomElementDefinition::runDisconnectedCallback(Element* element)
     runCallback(m_disconnectedCallback.newLocal(isolate), element);
 }
 
-void ScriptCustomElementDefinition::runAdoptedCallback(Element* element)
+void ScriptCustomElementDefinition::runAdoptedCallback(
+    Element* element, Document* oldOwner, Document *newOwner)
 {
     if (!m_scriptState->contextIsValid())
         return;
     ScriptState::Scope scope(m_scriptState.get());
     v8::Isolate* isolate = m_scriptState->isolate();
-    runCallback(m_adoptedCallback.newLocal(isolate), element);
+    const int argc = 2;
+    v8::Local<v8::Value> argv[argc] = {
+        toV8(oldOwner, m_scriptState->context()->Global(), isolate),
+        toV8(newOwner, m_scriptState->context()->Global(), isolate)
+    };
+    runCallback(m_adoptedCallback.newLocal(isolate), element, argc, argv);

[haraken, 2016/09/02 08:57:42]

argc => WTF_ARRAY_LENGTH(argv)

 }
 
 void ScriptCustomElementDefinition::runAttributeChangedCallback(