Move FieldTrialRecorder mojom to content

chrome/browser/field_trial_recorder.cc

-// Copyright 2016 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 "chrome/browser/field_trial_recorder.h"
-
-#include "base/memory/ptr_util.h"
-#include "base/metrics/field_trial.h"
-#include "mojo/public/cpp/bindings/strong_binding.h"
-
-FieldTrialRecorder::FieldTrialRecorder() = default;
-
-FieldTrialRecorder::~FieldTrialRecorder() = default;
-
-// static
-void FieldTrialRecorder::Create(
-    chrome::mojom::FieldTrialRecorderRequest request) {
-  mojo::MakeStrongBinding(base::MakeUnique<FieldTrialRecorder>(),
-                          std::move(request));
-}
-
-void FieldTrialRecorder::FieldTrialActivated(const std::string& trial_name) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  // Activate the trial in the browser process to match its state in the
-  // renderer. This is done by calling FindFullName which finalizes the group
-  // and activates the trial.
-  base::FieldTrialList::FindFullName(trial_name);
-}