Revert of Add LeakDetectorRemoteController as a Mojo service

chrome/browser/metrics/leak_detector/leak_detector_remote_controller.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/metrics/leak_detector/leak_detector_remote_controller.h"
-
-#include "content/public/browser/browser_thread.h"
-
-namespace metrics {
-
-namespace {
-
-// All instances of LeakDetectorRemoteController will need to reference a single
-// LocalController instance, referenced by this pointer. All remote LeakDetector
-// clients will get their params from and send leak reports to this instance.
-LeakDetectorRemoteController::LocalController* g_local_controller = nullptr;
-
-}  // namespace
-
-LeakDetectorRemoteController::~LeakDetectorRemoteController() {}
-
-// static
-void LeakDetectorRemoteController::Create(LeakDetectorRemoteRequest request) {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-  new LeakDetectorRemoteController(std::move(request));
-}
-
-void LeakDetectorRemoteController::GetParams(
-    const LeakDetectorRemote::GetParamsCallback& callback) {
-  // If no controller exists, send an empty param protobuf. The remote caller
-  // should not initialize anything if the params are empty.
-  MemoryLeakReportProto_Params params;
-  if (g_local_controller) {
-    params = g_local_controller->GetParams();
-  }
-
-  // Serialize the params before sending it to the Mojo client.
-  std::string serialized_params;
-  params.SerializeToString(&serialized_params);
-
-  callback.Run(serialized_params);
-}
-
-void LeakDetectorRemoteController::SendLeakReports(
-    mojo::Array<mojo::String> reports) {
-  std::vector<MemoryLeakReportProto> report_protos;
-  report_protos.reserve(reports.size());
-
-  for (const mojo::String& serialized_report : reports) {
-    report_protos.push_back(MemoryLeakReportProto());
-    report_protos.back().ParseFromString(serialized_report);
-  }
-  DCHECK(g_local_controller);
-  g_local_controller->SendLeakReports(report_protos);
-}
-
-LeakDetectorRemoteController::LeakDetectorRemoteController(
-    LeakDetectorRemoteRequest request)
-    : binding_(this, std::move(request)) {}
-
-// static
-void LeakDetectorRemoteController::SetLocalControllerInstance(
-    LocalController* controller) {
-  g_local_controller = controller;
-}
-
-}  // namespace metrics