Add the ThirdPartyModules.Uninstallable histogram.

chrome/browser/conflicts/module_database_win.cc

 // Copyright 2017 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/conflicts/module_database_win.h"
 
 #include <algorithm>
 #include <tuple>
 
 #include "base/bind.h"
@@ skipping 13 matching lines @@
 
 }  // namespace
 
 ModuleDatabase::ModuleDatabase(
     scoped_refptr<base::SequencedTaskRunner> task_runner)
     : task_runner_(std::move(task_runner)),
       // ModuleDatabase owns |module_inspector_|, so it is safe to use
       // base::Unretained().
       module_inspector_(base::Bind(&ModuleDatabase::OnModuleInspected,
                                    base::Unretained(this))),
+      third_party_metrics_(this),
       weak_ptr_factory_(this) {}
 
 ModuleDatabase::~ModuleDatabase() {
   if (this == g_instance)
     g_instance = nullptr;
 }
 
 // static
 ModuleDatabase* ModuleDatabase::GetInstance() {
   return g_instance;
@@ skipping 336 matching lines @@
 }
 
 // ModuleDatabase::ProcessInfoData ---------------------------------------------
 
 ModuleDatabase::ProcessInfoData::ProcessInfoData() = default;
 
 ModuleDatabase::ProcessInfoData::ProcessInfoData(const ProcessInfoData& other) =
     default;
 
 ModuleDatabase::ProcessInfoData::~ProcessInfoData() = default;