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 26 matching lines @@
  public:
   static WebContentDecryptionModuleImpl* Create(
 #if defined(ENABLE_PEPPER_CDMS)
       blink::WebLocalFrame* frame,
 #elif defined(ENABLE_BROWSER_CDMS)
       RendererCdmManager* manager,
 #endif
       const blink::WebSecurityOrigin& security_origin,
       const base::string16& key_system);
 
+  static blink::WebContentDecryptionModule::KeySystemSupportedResult
+      IsKeySystemSupported(const blink::WebString& key_system,
+                           const blink::WebString& init_data_type,
+                           const blink::WebString& container,
+                           const blink::WebString& codecs,
+                           const blink::WebString& capability);
+
   virtual ~WebContentDecryptionModuleImpl();
 
   // Returns the Decryptor associated with this CDM. May be NULL if no
   // Decryptor associated with the MediaKeys object.
   // 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
@@ skipping 18 matching lines @@
 
 // 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_