Add Stubbed implementation of WebCDM* interfaces for unprefixed EME APIs.

content/renderer/media/renderer_webcontentdecryptionmodule_impl.h

+// Copyright (c) 2013 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 CONTENT_RENDERER_MEDIA_RENDERER_WEBCONTENTDECRYPTIONMODULE_IMPL_H_
+#define CONTENT_RENDERER_MEDIA_RENDERER_WEBCONTENTDECRYPTIONMODULE_IMPL_H_
+
+#include "base/string16.h"
+#include "third_party/WebKit/public/platform/WebContentDecryptionModule.h"
+
+namespace content {
+
+class RendererWebContentDecryptionModuleImpl

[scherkus (not reviewing), 2013/06/12 00:48:44]

if we have the "Renderer" prefix do we really need the "Impl" suffix?

[jamesr, 2013/06/12 20:40:49]

why "Renderer"? is there any possible implementation of the
WebContentDecryptionModule interface?

if not, then just WebContentDecyptionModuleImpl sounds better

[ddorwin, 2013/06/12 21:13:00]

Done.

+    : public WebKit::WebContentDecryptionModule {
+ public:
+  static RendererWebContentDecryptionModuleImpl* create(
+      const string16& key_system);
+
+  virtual ~RendererWebContentDecryptionModuleImpl();
+
+  // WebKit::WebContentDecryptionModule implementation.
+  virtual WebKit::WebContentDecryptionModuleSession* createSession(
+      WebKit::WebContentDecryptionModuleSession::Client*);
+
+ private:
+  RendererWebContentDecryptionModuleImpl(const string16& key_system);
+
+  DISALLOW_COPY_AND_ASSIGN(RendererWebContentDecryptionModuleImpl);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_MEDIA_RENDERER_WEBCONTENTDECRYPTIONMODULE_IMPL_H_