Worker: Avoid sending IPC messages for features already counted

third_party/WebKit/Source/core/workers/ThreadedWorkletMessagingProxy.h

 // Copyright 2016 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 ThreadedWorkletMessagingProxy_h
 #define ThreadedWorkletMessagingProxy_h
 
 #include "core/CoreExport.h"
 #include "core/workers/ThreadedMessagingProxyBase.h"
 #include "core/workers/WorkletGlobalScopeProxy.h"
@@ skipping 14 matching lines @@
   void Initialize();
 
  protected:
   explicit ThreadedWorkletMessagingProxy(ExecutionContext*);
 
   ThreadedWorkletObjectProxy& WorkletObjectProxy() {
     return *worklet_object_proxy_;
   }
 
  private:
+  friend class ThreadedWorkletMessagingProxyForTest;
+
   std::unique_ptr<ThreadedWorkletObjectProxy> worklet_object_proxy_;
 
   WeakPtrFactory<ThreadedWorkletMessagingProxy> weak_ptr_factory_;
 };
 
 }  // namespace blink
 
 #endif  // ThreadedWorkletMessagingProxy_h