Add explicit to core/fetch, core/loader and modules/websockets

third_party/WebKit/Source/core/fetch/DocumentResourceReference.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 17 matching lines @@
 
 #include "core/fetch/DocumentResource.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
 class DocumentResourceReference final : public GarbageCollectedFinalized<DocumentResourceReference>, public DocumentResourceClient {
     USING_GARBAGE_COLLECTED_MIXIN(DocumentResourceReference);
     USING_PRE_FINALIZER(DocumentResourceReference, removeSelf);
 public:
-    DocumentResourceReference(DocumentResource* document)
+    explicit DocumentResourceReference(DocumentResource* document)
         : m_document(document)
     {
         ThreadState::current()->registerPreFinalizer(this);
         m_document->addClient(this);
     }
     ~DocumentResourceReference() override {}
     DocumentResource* document() { return m_document.get(); }
     DEFINE_INLINE_TRACE()
     {
         visitor->trace(m_document);
         DocumentResourceClient::trace(visitor);
     }
 
 private:
     void removeSelf() { m_document->removeClient(this); }
 
     String debugName() const override { return "DocumentResourceReference"; }
     Member<DocumentResource> m_document;
 };
 
 } // namespace blink
 
 #endif