[task_manager] Add ARC process whitelist.

chrome/browser/task_manager/providers/arc/arc_process_task_provider.cc

Index: chrome/browser/task_manager/providers/arc/arc_process_task_provider.cc
diff --git a/chrome/browser/task_manager/providers/arc/arc_process_task_provider.cc b/chrome/browser/task_manager/providers/arc/arc_process_task_provider.cc
index e843756d4671f0e54f6f8146e6282c04d17fe193..56483a63001879a8c92f14a06de7eff875211577 100644
--- a/chrome/browser/task_manager/providers/arc/arc_process_task_provider.cc
+++ b/chrome/browser/task_manager/providers/arc/arc_process_task_provider.cc
@@ -60,6 +60,10 @@ void ArcProcessTaskProvider::UpdateProcessList(
     nspid_to_remove.insert(entry.first);
 
   for (const auto& entry : processes) {
+    // Skip adding or updating processes we will not display.
+    if (!whitelist_.ShouldDisplayProcess(entry))

[Luis Héctor Chávez, 2017/01/24 17:09:41]

this does not look very whitelist-y to me :P (otherwise it would be something
along the lines of "if in whitelist, always add it").

how about calling it ArcProcessFilter instead?

[Eliot Courtney, 2017/01/25 02:08:12]

Yeah, good point. Done.

+      continue;
+
     if (nspid_to_remove.erase(entry.nspid()) == 0) {
       // New arc process.
       std::unique_ptr<ArcProcessTask>& task = (*pid_to_task)[entry.nspid()];