Remove now unused Balsa code.

net/tools/balsa/noop_balsa_visitor.h

-// Copyright 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-//
-// Provides empty BalsaVisitorInterface overrides for convenience.
-// Intended to be used as a base class for BalsaVisitorInterface subclasses that
-// only need to override a small number of methods.
-
-#ifndef NET_TOOLS_BALSA_NOOP_BALSA_VISITOR_H_
-#define NET_TOOLS_BALSA_NOOP_BALSA_VISITOR_H_
-
-#include <stddef.h>
-
-#include "base/macros.h"
-#include "net/tools/balsa/balsa_visitor_interface.h"
-
-namespace net {
-
-// See file comment above.
-class NoOpBalsaVisitor : public BalsaVisitorInterface {
- public:
-  NoOpBalsaVisitor() { }
-  ~NoOpBalsaVisitor() override {}
-
-  void ProcessBodyInput(const char* input, size_t size) override {}
-  void ProcessBodyData(const char* input, size_t size) override {}
-  void ProcessHeaderInput(const char* input, size_t size) override {}
-  void ProcessTrailerInput(const char* input, size_t size) override {}
-  void ProcessHeaders(const BalsaHeaders& headers) override {}
-
-  void ProcessRequestFirstLine(const char* line_input,
-                               size_t line_length,
-                               const char* method_input,
-                               size_t method_length,
-                               const char* request_uri_input,
-                               size_t request_uri_length,
-                               const char* version_input,
-                               size_t version_length) override {}
-  void ProcessResponseFirstLine(const char* line_input,
-                                size_t line_length,
-                                const char* version_input,
-                                size_t version_length,
-                                const char* status_input,
-                                size_t status_length,
-                                const char* reason_input,
-                                size_t reason_length) override {}
-  void ProcessChunkLength(size_t chunk_length) override {}
-  void ProcessChunkExtensions(const char* input, size_t size) override {}
-  void HeaderDone() override {}
-  void MessageDone() override {}
-  void HandleHeaderError(BalsaFrame* framer) override {}
-  void HandleHeaderWarning(BalsaFrame* framer) override {}
-  void HandleChunkingError(BalsaFrame* framer) override {}
-  void HandleBodyError(BalsaFrame* framer) override {}
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(NoOpBalsaVisitor);
-};
-
-}  // namespace net
-
-#endif  // NET_TOOLS_BALSA_NOOP_BALSA_VISITOR_H_