[WebSocketExtensionParser] Have Consume.* methods return bool instead of using has_error()

net/websockets/websocket_basic_handshake_stream.cc

Index: net/websockets/websocket_basic_handshake_stream.cc
diff --git a/net/websockets/websocket_basic_handshake_stream.cc b/net/websockets/websocket_basic_handshake_stream.cc
index a4a7d7b5fd5a3e9295dab33f33455361628a35e8..7bb34a335c75898f6b6de9e8e9e373542bb4c068 100644
--- a/net/websockets/websocket_basic_handshake_stream.cc
+++ b/net/websockets/websocket_basic_handshake_stream.cc
@@ -315,8 +315,7 @@ bool ValidateExtensions(const HttpResponseHeaders* headers,
   while (headers->EnumerateHeader(&state, websockets::kSecWebSocketExtensions,
                                   &header_value)) {
     WebSocketExtensionParser parser;
-    parser.Parse(header_value);
-    if (parser.has_error()) {
+    if (!parser.Parse(header_value)) {
       // TODO(yhirano) Set appropriate failure message.
       *failure_message =
           "'Sec-WebSocket-Extensions' header value is "