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

net/server/web_socket_encoder.cc

Index: net/server/web_socket_encoder.cc
diff --git a/net/server/web_socket_encoder.cc b/net/server/web_socket_encoder.cc
index 8e1681c8a7233d3878fb0180fc16e5d88e4f3384..e35f75910a5e3e1a82523cf7a65f702808bf9f2a 100644
--- a/net/server/web_socket_encoder.cc
+++ b/net/server/web_socket_encoder.cc
@@ -251,8 +251,7 @@ void WebSocketEncoder::ParseExtensions(const std::string& header_value,
     return;
 
   WebSocketExtensionParser parser;
-  parser.Parse(header_value);
-  if (parser.has_error())
+  if (!parser.Parse(header_value))
     return;
   const std::vector<WebSocketExtension>& extensions = parser.extensions();
   // TODO(tyoshino): Fail if this method is used for parsing a response and