Restructure the ipc_fuzzer directory.

tools/ipc_fuzzer/fuzzer/mutator.cc

 // 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.
 
 #include <algorithm>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
-#include "tools/ipc_fuzzer/mutate/mutator.h"
-#include "tools/ipc_fuzzer/mutate/rand_util.h"
+#include "tools/ipc_fuzzer/fuzzer/mutator.h"
+#include "tools/ipc_fuzzer/fuzzer/rand_util.h"
 
 namespace ipc_fuzzer {
 
 template <typename T>
 void FuzzIntegralType(T* value, unsigned int frequency) {
   if (RandEvent(frequency)) {
     switch (RandInRange(4)) {
       case 0: (*value) = 0; break;
       case 1: (*value)--; break;
       case 2: (*value)++; break;
@@ skipping 89 matching lines @@
   FuzzData(static_cast<char*>(data), data_len);
 }
 
 bool Mutator::ShouldGenerate() {
   // TODO(mbarbella): With a low probability, allow something to be fully
   // rewritten while mutating instead of always changing the existing value.
   return false;
 }
 
 }  // namespace ipc_fuzzer