Sanitize data before providing it to the CDM

media/cdm/key_system_names.h

Index: media/cdm/key_system_names.h
diff --git a/media/cdm/key_system_names.h b/media/cdm/key_system_names.h
index 94c84da1406a63520053cb816933eeff2cd1c655..6c388b98c841313ff789d0cb9c3d315c4bfd3cb9 100644
--- a/media/cdm/key_system_names.h
+++ b/media/cdm/key_system_names.h
@@ -20,9 +20,7 @@ MEDIA_EXPORT extern const char kClearKey[];
 MEDIA_EXPORT extern const char kExternalClearKey[];
 
 // Returns true if |key_system| is Clear Key, false otherwise.
-MEDIA_EXPORT inline bool IsClearKey(const std::string& key_system) {
-  return key_system == kClearKey;
-}
+MEDIA_EXPORT bool IsClearKey(const std::string& key_system);
 
 // Returns true if |key_system| is (reverse) sub-domain of |parent_key_system|.
 MEDIA_EXPORT bool IsParentKeySystemOf(const std::string& parent_key_system,