Reporting top cpu and memory consumers via rappor on chromeos

chrome/browser/task_management/sampling/task_group_sampler.h

Index: chrome/browser/task_management/sampling/task_group_sampler.h
diff --git a/chrome/browser/task_management/sampling/task_group_sampler.h b/chrome/browser/task_management/sampling/task_group_sampler.h
index 6521fe483eea097f6d6093cef82c8f1cfcf2222e..6d7bdccafa23d99fa06dcfcc508b29e46d1f5878 100644
--- a/chrome/browser/task_management/sampling/task_group_sampler.h
+++ b/chrome/browser/task_management/sampling/task_group_sampler.h
@@ -7,6 +7,7 @@
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
+#include "base/process/process.h"
 #include "base/process/process_handle.h"
 #include "base/process/process_metrics.h"
 #include "base/sequence_checker.h"
@@ -39,13 +40,16 @@ class TaskGroupSampler : public base::RefCountedThreadSafe<TaskGroupSampler> {
   using OnCpuRefreshCallback = base::Callback<void(double)>;
   using OnMemoryRefreshCallback = base::Callback<void(MemoryUsageStats)>;
   using OnIdleWakeupsCallback = base::Callback<void(int)>;
+  using OnProcessPriorityCallback = base::Callback<void(bool)>;
 
   TaskGroupSampler(
+      base::ProcessId proc_id,
       base::ProcessHandle proc_handle,
       const scoped_refptr<base::SequencedTaskRunner>& blocking_pool_runner,
       const OnCpuRefreshCallback& on_cpu_refresh,
       const OnMemoryRefreshCallback& on_memory_refresh,
-      const OnIdleWakeupsCallback& on_idle_wakeups);
+      const OnIdleWakeupsCallback& on_idle_wakeups,
+      const OnProcessPriorityCallback& on_process_priority);
 
   // Refreshes the expensive process' stats (CPU usage, memory usage, and idle
   // wakeups per second) on the worker thread.
@@ -59,6 +63,7 @@ class TaskGroupSampler : public base::RefCountedThreadSafe<TaskGroupSampler> {
   double RefreshCpuUsage();
   MemoryUsageStats RefreshMemoryUsage();
   int RefreshIdleWakeupsPerSecond();
+  bool RefreshProcessPriority();
 
   scoped_ptr<base::ProcessMetrics> process_metrics_;
 
@@ -66,11 +71,14 @@ class TaskGroupSampler : public base::RefCountedThreadSafe<TaskGroupSampler> {
   // the refresh tasks onto serially.
   scoped_refptr<base::SequencedTaskRunner> blocking_pool_runner_;
 
+  base::Process process_;
+
   // The UI-thread callbacks in TaskGroup to be called when their corresponding
   // refreshes on the worker thread are done.
   const OnCpuRefreshCallback on_cpu_refresh_callback_;
   const OnMemoryRefreshCallback on_memory_refresh_callback_;
   const OnIdleWakeupsCallback on_idle_wakeups_callback_;
+  const OnProcessPriorityCallback on_process_priority_callback_;
 
   // To assert we're running on the correct thread.
   base::SequenceChecker worker_pool_sequenced_checker_;