Allow suppressed EME canPlayType() responses to be overridden with a flag.

webkit/renderer/media/crypto/key_systems_info.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 WEBKIT_RENDERER_MEDIA_CRYPTO_KEY_SYSTEMS_INFO_H_
 #define WEBKIT_RENDERER_MEDIA_CRYPTO_KEY_SYSTEMS_INFO_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 37 matching lines @@
 
 #if defined(OS_ANDROID)
 // Mapping from key system to UUID, one entry per key system.
 extern const KeySystemUUIDPair kKeySystemToUUIDMapping[];
 extern const int kNumKeySystemToUUIDMapping;
 #endif  // defined(OS_ANDROID)
 
 // Returns whether |key_system| is compatible with the user's system.
 bool IsSystemCompatible(const std::string& key_system);
 
+// Returns true if canPlayType should return an empty string for |key_system|.
+bool IsCanPlayTypeSuppressed(const std::string& key_system);
+
 // Returns the name that UMA will use for the given |key_system|.
 // This function can be called frequently. Hence this function should be
 // implemented not to impact performance.
 std::string KeySystemNameForUMAGeneric(const std::string& key_system);
 
 // Returns whether built-in AesDecryptor can be used for the given |key_system|.
 bool CanUseBuiltInAesDecryptor(const std::string& key_system);
 
 }  // namespace webkit_media
 
 #endif  // WEBKIT_RENDERER_MEDIA_CRYPTO_KEY_SYSTEMS_INFO_H_