Revert "Add a json_perftest_decodebench program"

This reverts commit d1c2a486.

Reason for revert: caused compilation failure:
https://ci.chromium.org/p/chromium/builders/ci/win32-archive-rel/12506?

Original change's description:
> Add a json_perftest_decodebench program
> 
> The existing //base/json/json_perftest.cc, run automatically as part of
> continuous integration, benchmarks synthetic JSON data. This program,
> run manually, benchmarks real data (e.g. from a web crawl, passed as
> command line arguments). Both are useful.
> 
> Bug: 1069271
> Change-Id: I61f519804d731895e804d86f893c857cc1ac5953
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2154626
> Commit-Queue: Nigel Tao <nigeltao@chromium.org>
> Reviewed-by: Robert Sesek <rsesek@chromium.org>
> Reviewed-by: Nico Weber <thakis@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#762683}

TBR=thakis@chromium.org,rsesek@chromium.org,nigeltao@chromium.org

Change-Id: Id6b89d0a2aede5c454753b622ca05d69681225e0
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 1069271
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2167106Reviewed-by: Xida Chen <xidachen@chromium.org>
Commit-Queue: Xida Chen <xidachen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#762684}

base/BUILD.gn

@@ -2362,11 +2362,6 @@ if (!is_ios) {
       "//build/win:default_exe_manifest",
     ]
   }
-
-  executable("json_perftest_decodebench") {
-    sources = [ "json/json_perftest_decodebench.cc" ]
-    deps = [ ":base" ]
-  }
 }
 
 if (is_win) {

base/json/json_perftest_decodebench.cc

-// Copyright 2020 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.
-
-// This program measures the time taken to decode the given JSON files (the
-// command line arguments). It is for manual benchmarking.
-//
-// Usage:
-// $ ninja -C out/foobar json_perftest_decodebench
-// $ out/foobar/json_perftest_decodebench -a -n=10 the/path/to/your/*.json
-//
-// The -n=10 switch controls the number of iterations. It defaults to 1.
-//
-// The -a switch means to print 1 non-comment line per input file (the average
-// iteration time). Without this switch (the default), it prints n non-comment
-// lines per input file (individual iteration times). For a single input file,
-// building and running this program before and after a particular commit can
-// work well with the 'ministat' tool: https://github.com/thorduri/ministat
-
-#include <inttypes.h>
-#include <stdio.h>
-
-#include "base/command_line.h"
-#include "base/files/file_util.h"
-#include "base/json/json_reader.h"
-#include "base/time/time.h"
-
-int main(int argc, char* argv[]) {
-  if (!base::ThreadTicks::IsSupported()) {
-    printf("# base::ThreadTicks is not supported\n");
-    return EXIT_FAILURE;
-  }
-  base::ThreadTicks::WaitUntilInitialized();
-
-  base::CommandLine command_line(argc, argv);
-  bool average = command_line.HasSwitch("a");
-  int iterations = 1;
-  std::string iterations_str = command_line.GetSwitchValueASCII("n");
-  if (!iterations_str.empty()) {
-    iterations = atoi(iterations_str.c_str());
-    if (iterations < 1) {
-      printf("# invalid -n command line switch\n");
-      return EXIT_FAILURE;
-    }
-  }
-
-  if (average) {
-    printf("# Microseconds (μs), n=%d, averaged\n", iterations);
-  } else {
-    printf("# Microseconds (μs), n=%d\n", iterations);
-  }
-  for (const auto& filename : command_line.GetArgs()) {
-    std::string src;
-    if (!base::ReadFileToString(base::FilePath(filename), &src)) {
-      printf("# could not read %s\n", filename.c_str());
-      return EXIT_FAILURE;
-    }
-    int64_t total_time = 0;
-    for (int i = 0; i < iterations; ++i) {
-      auto start = base::ThreadTicks::Now();
-      auto v = base::JSONReader::ReadAndReturnValueWithError(src);
-      auto end = base::ThreadTicks::Now();
-      int64_t iteration_time = (end - start).InMicroseconds();
-      total_time += iteration_time;
-
-      if (i == 0) {
-        if (!v.error_message.empty()) {
-          printf("# %s: %s\n", filename.c_str(), v.error_message.c_str());
-        } else if (!average) {
-          printf("# %s\n", filename.c_str());
-        }
-      }
-
-      if (!average) {
-        printf("%" PRId64 "\n", iteration_time);
-      }
-    }
-
-    if (average) {
-      int64_t average_time = total_time / iterations;
-      printf("%12" PRId64 "\t# %s\n", average_time, filename.c_str());
-    }
-  }
-  return EXIT_SUCCESS;
-}