[bindings] partial interfaces should not violate componentization

Source/bindings/modules/v8/ModuleBindingsInitializer.cpp

 // 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.
 
 #include "config.h"
 #include "bindings/modules/v8/ModuleBindingsInitializer.h"
 
 #include "bindings/core/v8/ModuleProxy.h"
 #include "bindings/core/v8/V8PerIsolateData.h"
 #include "core/dom/ExecutionContext.h"
 #include "modules/indexeddb/IDBPendingTransactionMonitor.h"
 
 namespace blink {
 
 static void didLeaveScriptContextForModule(v8::Isolate* isolate)
 {
     // Indexed DB requires that transactions are created with an internal |active| flag
     // set to true, but the flag becomes false when control returns to the event loop.
     V8PerIsolateData::from(isolate)->ensureIDBPendingTransactionMonitor()->deactivateNewTransactions();
 }
 
 void ModuleBindingsInitializer::init()
 {
     ModuleProxy::moduleProxy().registerDidLeaveScriptContextForRecursionScope(didLeaveScriptContextForModule);
+    initPartialInterface();
 }
 
 } // namespace blink