Reporting top cpu and memory consumers via rappor on chromeos

chrome/browser/task_management/sampling/task_group.cc

Index: chrome/browser/task_management/sampling/task_group.cc
diff --git a/chrome/browser/task_management/sampling/task_group.cc b/chrome/browser/task_management/sampling/task_group.cc
index 929d3b8deb6fc0b06ca797505dcb70669b318bca..8db90c0c861148453796f1bab46342bde29737ca 100644
--- a/chrome/browser/task_management/sampling/task_group.cc
+++ b/chrome/browser/task_management/sampling/task_group.cc
@@ -75,15 +75,18 @@ TaskGroup::TaskGroup(
 #endif  // !defined(DISABLE_NACL)
       idle_wakeups_per_second_(-1),
       gpu_memory_has_duplicates_(false),
+      is_backgrounded_(false),
       weak_ptr_factory_(this) {
   scoped_refptr<TaskGroupSampler> sampler(
-      new TaskGroupSampler(proc_handle,
+      new TaskGroupSampler(base::Process::Open(proc_id),
                            blocking_pool_runner,
                            base::Bind(&TaskGroup::OnCpuRefreshDone,
                                       weak_ptr_factory_.GetWeakPtr()),
                            base::Bind(&TaskGroup::OnMemoryUsageRefreshDone,
                                       weak_ptr_factory_.GetWeakPtr()),
                            base::Bind(&TaskGroup::OnIdleWakeupsRefreshDone,
+                                      weak_ptr_factory_.GetWeakPtr()),
+                           base::Bind(&TaskGroup::OnProcessPriorityDone,
                                       weak_ptr_factory_.GetWeakPtr())));
   worker_thread_sampler_.swap(sampler);
 }
@@ -149,6 +152,7 @@ void TaskGroup::Refresh(
   // 5- CPU usage.
   // 6- Memory usage.
   // 7- Idle Wakeups per second.
+  // 8- Process priority (foreground vs. background).
   worker_thread_sampler_->Refresh(refresh_flags);
 }
 
@@ -215,4 +219,10 @@ void TaskGroup::OnIdleWakeupsRefreshDone(int idle_wakeups_per_second) {
   idle_wakeups_per_second_ = idle_wakeups_per_second;
 }
 
+void TaskGroup::OnProcessPriorityDone(bool is_backgrounded) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+
+  is_backgrounded_ = is_backgrounded;
+}
+
 }  // namespace task_management