Restructure the ipc_fuzzer directory.

tools/ipc_fuzzer/mutate/generator.h

-// Copyright 2015 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 TOOLS_IPC_FUZZER_MUTATE_GENERATOR_H_
-#define TOOLS_IPC_FUZZER_MUTATE_GENERATOR_H_
-
-#include <string>
-
-#include "tools/ipc_fuzzer/mutate/fuzzer.h"
-
-namespace ipc_fuzzer {
-
-class Generator : public Fuzzer {
- public:
-  Generator() {}
-  virtual ~Generator() {}
-
-  void FuzzBool(bool* value) override;
-  void FuzzInt(int* value) override;
-  void FuzzLong(long* value) override;
-  void FuzzSize(size_t* value) override;
-  void FuzzUChar(unsigned char* value) override;
-  void FuzzWChar(wchar_t* value) override;
-  void FuzzUInt16(uint16* value) override;
-  void FuzzUInt32(uint32* value) override;
-  void FuzzInt64(int64* value) override;
-  void FuzzUInt64(uint64* value) override;
-  void FuzzFloat(float* value) override;
-  void FuzzDouble(double* value) override;
-  void FuzzString(std::string* value) override;
-  void FuzzString16(base::string16* value) override;
-  void FuzzData(char* data, int length) override;
-  void FuzzBytes(void* data, int data_len) override;
-  bool ShouldGenerate() override;
-};
-
-}  // namespace ipc_fuzzer
-
-#endif  // TOOLS_IPC_FUZZER_MUTATE_GENERATOR_H_