Update MediaKeys interface for EME

content/renderer/media/crypto/proxy_decryptor.cc

Index: content/renderer/media/crypto/proxy_decryptor.cc
diff --git a/content/renderer/media/crypto/proxy_decryptor.cc b/content/renderer/media/crypto/proxy_decryptor.cc
index 8a9a757a9046c9150d95f7579429edfbd0e08d2f..75743b213ee0dd285af321a4ce19dfbeb08b1add 100644
--- a/content/renderer/media/crypto/proxy_decryptor.cc
+++ b/content/renderer/media/crypto/proxy_decryptor.cc
@@ -218,7 +218,7 @@ void ProxyDecryptor::CancelKeyRequest(const std::string& web_session_id) {
                                   base::Bind(&ProxyDecryptor::OnSessionError,
                                              weak_ptr_factory_.GetWeakPtr(),
                                              web_session_id)));
-  media_keys_->ReleaseSession(web_session_id, promise.Pass());
+  media_keys_->RemoveSession(web_session_id, promise.Pass());
 }
 
 scoped_ptr<media::MediaKeys> ProxyDecryptor::CreateMediaKeys(
@@ -235,6 +235,10 @@ scoped_ptr<media::MediaKeys> ProxyDecryptor::CreateMediaKeys(
 #endif  // defined(ENABLE_PEPPER_CDMS)
       base::Bind(&ProxyDecryptor::OnSessionMessage,
                  weak_ptr_factory_.GetWeakPtr()),
+      base::Bind(&ProxyDecryptor::OnSessionKeysChange,
+                 weak_ptr_factory_.GetWeakPtr()),
+      base::Bind(&ProxyDecryptor::OnSessionExpirationChange,
+                 weak_ptr_factory_.GetWeakPtr()),
       base::Bind(&ProxyDecryptor::OnSessionReady,
                  weak_ptr_factory_.GetWeakPtr()),
       base::Bind(&ProxyDecryptor::OnSessionClosed,
@@ -261,6 +265,17 @@ void ProxyDecryptor::OnSessionMessage(const std::string& web_session_id,
   key_message_cb_.Run(web_session_id, message, destination_url);
 }
 
+void ProxyDecryptor::OnSessionKeysChange(const std::string& web_session_id,
+                                         bool has_additional_usable_key) {
+  // EME v0.1b doesn't support this event.
+}
+
+void ProxyDecryptor::OnSessionExpirationChange(
+    const std::string& web_session_id,
+    double new_expiry_time) {
+  // EME v0.1b doesn't support this event.
+}
+
 void ProxyDecryptor::OnSessionReady(const std::string& web_session_id) {
   key_added_cb_.Run(web_session_id);
 }