aw: Support the platform specific key-systems.

media/base/android/media_drm_bridge.h

Index: media/base/android/media_drm_bridge.h
diff --git a/media/base/android/media_drm_bridge.h b/media/base/android/media_drm_bridge.h
index 8c33a334617dfcb67ad70c12ce6591dcce67f794..3c0bfb3e640a91fe8b45d8b2a8cc72b741f7fb8c 100644
--- a/media/base/android/media_drm_bridge.h
+++ b/media/base/android/media_drm_bridge.h
@@ -52,12 +52,6 @@ class MEDIA_EXPORT MediaDrmBridge : public BrowserCdm {
   // are not handled by Chrome explicitly.
   static std::vector<std::string> GetPlatformKeySystemNames();
 
-  // Adds a new |key_system| with the associated |uuid|.
-  // This is used for other platforms to have a chance to register their
-  // own UUID mapping.
-  static void AddKeySystemUuidMapping(const std::string& key_system,
-                                      const std::vector<uint8>& uuid);
-
   // Checks whether |key_system| is supported with |container_mime_type|.
   // |container_mime_type| must not be empty.
   static bool IsKeySystemSupportedWithType(