Migrate ProcessesEventRouter to the new task manager

chrome/browser/task_management/task_manager_observer.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 "chrome/browser/task_management/task_manager_observer.h"
 
 #include "chrome/browser/task_management/task_manager_interface.h"
 
 namespace task_management {
 
 TaskManagerObserver::TaskManagerObserver(base::TimeDelta refresh_time,
                                          int64_t resources_flags)
     : observed_task_manager_(nullptr),
       desired_refresh_time_(refresh_time < base::TimeDelta::FromSeconds(1)
                                 ? base::TimeDelta::FromSeconds(1)
                                 : refresh_time),
       desired_resources_flags_(resources_flags) {}
 
 TaskManagerObserver::~TaskManagerObserver() {
+  if (observed_task_manager())
+    observed_task_manager()->RemoveObserver(this);
 }
 
 void TaskManagerObserver::AddRefreshType(RefreshType type) {
   desired_resources_flags_ |= type;
 
   if (observed_task_manager_)
     observed_task_manager_->RecalculateRefreshFlags();
 }
 
 void TaskManagerObserver::RemoveRefreshType(RefreshType type) {
   desired_resources_flags_ &= ~type;
 
   if (observed_task_manager_)
     observed_task_manager_->RecalculateRefreshFlags();
 }
 
+void TaskManagerObserver::SetRefreshTypesFlags(int64_t flags) {
+  desired_resources_flags_ = flags;
+
+  if (observed_task_manager_)
+    observed_task_manager_->RecalculateRefreshFlags();
+}
 
 }  // namespace task_management