Remove extension group from DOMWrapperWorld.

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

Index: third_party/WebKit/Source/bindings/core/v8/ScriptController.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/ScriptController.cpp b/third_party/WebKit/Source/bindings/core/v8/ScriptController.cpp
index 1f94c6f472547851aa03ba867ae0b6e9965d2ec7..6cddc161cf5d8c1158f8a9be8d2657026e1d2d38 100644
--- a/third_party/WebKit/Source/bindings/core/v8/ScriptController.cpp
+++ b/third_party/WebKit/Source/bindings/core/v8/ScriptController.cpp
@@ -435,12 +435,11 @@ v8::Local<v8::Value> ScriptController::evaluateScriptInMainWorld(
 void ScriptController::executeScriptInIsolatedWorld(
     int worldID,
     const HeapVector<ScriptSourceCode>& sources,
-    int extensionGroup,
     Vector<v8::Local<v8::Value>>* results) {
   ASSERT(worldID > 0);
 
   RefPtr<DOMWrapperWorld> world =
-      DOMWrapperWorld::ensureIsolatedWorld(isolate(), worldID, extensionGroup);
+      DOMWrapperWorld::ensureIsolatedWorld(isolate(), worldID);
   LocalWindowProxy* isolatedWorldWindowProxy = windowProxy(*world);
   ScriptState* scriptState = isolatedWorldWindowProxy->getScriptState();
   if (!scriptState->contextIsValid())