WebSocket Mojo API: set reason when disconnecting a WebSocket interface because of insufficient res…

content/browser/websockets/websocket_manager.cc

Index: content/browser/websockets/websocket_manager.cc
diff --git a/content/browser/websockets/websocket_manager.cc b/content/browser/websockets/websocket_manager.cc
index 9bce39cdbb3ce94e94edfb8585aad93d93561b1a..7dfb2948d5d463b332a9318b7b6781d0b2971c23 100644
--- a/content/browser/websockets/websocket_manager.cc
+++ b/content/browser/websockets/websocket_manager.cc
@@ -108,8 +108,10 @@ void WebSocketManager::DoCreateWebSocket(
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
   if (num_pending_connections_ >= kMaxPendingWebSocketConnections) {
-    // Too many websockets! By returning here, we let |request| die, which
-    // will be observed by the client as Mojo connection error.
+    // Too many websockets!
+    request.ResetWithReason(
+        blink::mojom::WebSocket::kInsufficientResources,
+        "Error in connection establishment: net::ERR_INSUFFICIENT_RESOURCES");
     return;
   }