Revert of Add builders for tracing event's structural arguments

base/debug/trace_event_argument.h

-// Copyright 2014 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.
-
-#ifndef BASE_DEBUG_TRACE_EVENT_ARGUMENT_H_
-#define BASE_DEBUG_TRACE_EVENT_ARGUMENT_H_
-
-#include <string>
-#include <vector>
-
-#include "base/debug/trace_event.h"
-
-namespace base {
-class DictionaryValue;
-class ListValue;
-class Value;
-
-namespace debug {
-
-class BASE_EXPORT TracedValue : public ConvertableToTraceFormat {
- public:
-  TracedValue();
-
-  void EndDictionary();
-  void EndArray();
-
-  void SetInteger(const char* name, int value);
-  void SetDouble(const char* name, double);
-  void SetBoolean(const char* name, bool value);
-  void SetString(const char* name, const std::string& value);
-  void SetValue(const char* name, Value* value);
-  void BeginDictionary(const char* name);
-  void BeginArray(const char* name);
-
-  void AppendInteger(int);
-  void AppendDouble(double);
-  void AppendBoolean(bool);
-  void AppendString(const std::string&);
-  void BeginArray();
-  void BeginDictionary();
-
-  virtual void AppendAsTraceFormat(std::string* out) const OVERRIDE;
-
- private:
-  virtual ~TracedValue();
-
-  DictionaryValue* GetCurrentDictionary();
-  ListValue* GetCurrentArray();
-
-  std::vector<Value*> stack_;
-  DISALLOW_COPY_AND_ASSIGN(TracedValue);
-};
-
-}  // namespace debug
-}  // namespace base
-
-#endif  // BASE_DEBUG_TRACE_EVENT_ARGUMENT_H_