Support LoadSession() in MediaKeys and PPP_ContentDecryptor_Private interface.

content/renderer/pepper/content_decryptor_delegate.h

Index: content/renderer/pepper/content_decryptor_delegate.h
diff --git a/content/renderer/pepper/content_decryptor_delegate.h b/content/renderer/pepper/content_decryptor_delegate.h
index 257380052bf14cf5a389b113f1a1d1ea67664464..daeae6d9917296038912ecaaa052f2067a1f8e0e 100644
--- a/content/renderer/pepper/content_decryptor_delegate.h
+++ b/content/renderer/pepper/content_decryptor_delegate.h
@@ -53,9 +53,10 @@ class ContentDecryptorDelegate {
 
   // Provides access to PPP_ContentDecryptor_Private.
   bool CreateSession(uint32 session_id,
-                     const std::string& type,
+                     const std::string& content_type,
                      const uint8* init_data,
                      int init_data_length);
+  bool LoadSession(uint32 session_id, const std::string& web_session_id);
   bool UpdateSession(uint32 session_id,
                      const uint8* response,
                      int response_length);