[MediaRouter] Renames CloseRoute() to Terminate() and creates DetachRoute()

content/common/presentation/presentation_service.mojom

Index: content/common/presentation/presentation_service.mojom
diff --git a/content/common/presentation/presentation_service.mojom b/content/common/presentation/presentation_service.mojom
index 204d179cebd9cf1be8abce36f4530e536399011d..ee730d2a43fe6782a40fcbeccb59ed7fff05a2b2 100644
--- a/content/common/presentation/presentation_service.mojom
+++ b/content/common/presentation/presentation_service.mojom
@@ -88,10 +88,10 @@ interface PresentationService {
                      SessionMessage message_request) => (bool success);
 
   // Called when close() is called by the frame.
-  CloseSession(string presentation_url, string presentation_id);
+  CloseConnection(string presentation_url, string presentation_id);
 
   // Called when terminate() is called by the frame.
-  TerminateSession(string presentation_url, string presentation_id);
+  Terminate(string presentation_url, string presentation_id);
 
   // Starts listening for messages for session with |sessionInfo|.
   // Messages will be received in