Add MediaKeys::GetCdmId().

content/renderer/media/crypto/proxy_media_keys.cc

Index: content/renderer/media/crypto/proxy_media_keys.cc
diff --git a/content/renderer/media/crypto/proxy_media_keys.cc b/content/renderer/media/crypto/proxy_media_keys.cc
index 87d078834daca88d0f1db828e2a68c1c181f3ffe..e62c6cea1fdc0410b26e615869a5c1aeb4497f46 100644
--- a/content/renderer/media/crypto/proxy_media_keys.cc
+++ b/content/renderer/media/crypto/proxy_media_keys.cc
@@ -142,6 +142,10 @@ void ProxyMediaKeys::GetUsableKeyIds(const std::string& web_session_id,
   promise->reject(NOT_SUPPORTED_ERROR, 0, "Not yet implemented.");
 }
 
+int ProxyMediaKeys::GetCdmId() const {
+  return cdm_id_;
+}
+
 void ProxyMediaKeys::OnSessionCreated(uint32 session_id,
                                       const std::string& web_session_id) {
   AssignWebSessionId(session_id, web_session_id);
@@ -218,10 +222,6 @@ void ProxyMediaKeys::OnSessionError(uint32 session_id,
       web_session_id, exception_code, system_code, std::string());
 }
 
-int ProxyMediaKeys::GetCdmId() const {
-  return cdm_id_;
-}
-
 ProxyMediaKeys::ProxyMediaKeys(
     RendererCdmManager* manager,
     const media::SessionMessageCB& session_message_cb,