Task manager tracking RenderProcessHosts processes

chrome/browser/task_manager/sampling/task_manager_impl.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_manager/sampling/task_manager_impl.h"
 
 #include <algorithm>
 #include <string>
 #include <unordered_map>
 #include <unordered_set>
 #include <vector>
 
+#include "base/command_line.h"
 #include "base/containers/adapters.h"
 #include "base/task_scheduler/post_task.h"
 #include "build/build_config.h"
 #include "chrome/browser/task_manager/providers/browser_process_task_provider.h"
 #include "chrome/browser/task_manager/providers/child_process_task_provider.h"
+#include "chrome/browser/task_manager/providers/render_process_host_task_provider.h"
 #include "chrome/browser/task_manager/providers/web_contents/web_contents_task_provider.h"
 #include "chrome/browser/task_manager/sampling/shared_sampler.h"
+#include "chrome/common/chrome_switches.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/gpu_data_manager.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/web_contents.h"
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/task_manager/providers/arc/arc_process_task_provider.h"
 #include "components/arc/arc_util.h"
 #endif  // defined(OS_CHROMEOS)
@@ skipping 15 matching lines @@
           {base::MayBlock(), base::TaskPriority::BACKGROUND,
            base::TaskShutdownBehavior::SKIP_ON_SHUTDOWN})),
       shared_sampler_(new SharedSampler(blocking_pool_runner_)),
       is_running_(false),
       weak_ptr_factory_(this) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
 
   task_providers_.emplace_back(new BrowserProcessTaskProvider());
   task_providers_.emplace_back(new ChildProcessTaskProvider());
   task_providers_.emplace_back(new WebContentsTaskProvider());
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kTaskManagerShowExtraRenderers)) {
+    task_providers_.emplace_back(new RenderProcessHostTaskProvider());
+  }
+
 #if defined(OS_CHROMEOS)
   if (arc::IsArcAvailable())
     task_providers_.emplace_back(new ArcProcessTaskProvider());
 #endif  // defined(OS_CHROMEOS)
 }
 
 TaskManagerImpl::~TaskManagerImpl() {
 }
 
 // static
@@ skipping 515 matching lines @@
         groups_itr.second->AreBackgroundCalculationsDone();
   }
   if (are_all_processes_data_ready) {
     NotifyObserversOnRefreshWithBackgroundCalculations(GetTaskIdsList());
     for (const auto& groups_itr : task_groups_by_proc_id_)
       groups_itr.second->ClearCurrentBackgroundCalculationsFlags();
   }
 }
 
 }  // namespace task_manager