Implement Chromium side of MediaKeys.isTypeSupported().

content/renderer/media/webcontentdecryptionmodule_impl.h

 // Copyright 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_WEBCONTENTDECRYPTIONMODULE_IMPL_H_
 #define CONTENT_RENDERER_MEDIA_WEBCONTENTDECRYPTIONMODULE_IMPL_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
@@ skipping 40 matching lines @@
   // TODO(jrummell): Figure out lifetimes, as WMPI may still use the decryptor
   // after WebContentDecryptionModule is freed. http://crbug.com/330324
   media::Decryptor* GetDecryptor();
 
 #if defined(ENABLE_BROWSER_CDMS)
   // Returns the CDM ID associated with this object. May be kInvalidCdmId if no
   // CDM ID is associated, such as when Clear Key is used.
   int GetCdmId() const;
 #endif  // defined(ENABLE_BROWSER_CDMS)
 
+  static blink::WebContentDecryptionModule::SupportsKeySystem

[ddorwin, 2014/09/13 01:20:47]

Are statics supposed to be grouped?

[sandersd (OOO until July 31), 2014/09/22 23:45:54]

Done.

+      IsKeySystemSupported(const blink::WebString& key_system,
+                           const blink::WebString& init_data_type,
+                           const blink::WebString& container,
+                           const blink::WebString& codecs,
+                           const blink::WebString& capability);
+
   // blink::WebContentDecryptionModule implementation.
   virtual blink::WebContentDecryptionModuleSession* createSession();
   // TODO(jrummell): Remove this method once blink updated.
   virtual blink::WebContentDecryptionModuleSession* createSession(
       blink::WebContentDecryptionModuleSession::Client* client);
 
  private:
   // Takes reference to |adapter|.
   WebContentDecryptionModuleImpl(scoped_refptr<CdmSessionAdapter> adapter);
 
   scoped_refptr<CdmSessionAdapter> adapter_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentDecryptionModuleImpl);
 };
 
 // Allow typecasting from blink type as this is the only implementation.
 inline WebContentDecryptionModuleImpl* ToWebContentDecryptionModuleImpl(
     blink::WebContentDecryptionModule* cdm) {
   return static_cast<WebContentDecryptionModuleImpl*>(cdm);
 }
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_WEBCONTENTDECRYPTIONMODULE_IMPL_H_