Refactor ARC OOM handler code

chrome/browser/chromeos/arc/process/arc_process.h

Index: chrome/browser/chromeos/arc/process/arc_process.h
diff --git a/chrome/browser/chromeos/arc/process/arc_process.h b/chrome/browser/chromeos/arc/process/arc_process.h
index f4ee65c687186e771038bd9f6f2b6f1c135e9a0d..a3b638bfa00cbd16ca1625e8955b0c3ff2a4094b 100644
--- a/chrome/browser/chromeos/arc/process/arc_process.h
+++ b/chrome/browser/chromeos/arc/process/arc_process.h
@@ -39,6 +39,16 @@ class ArcProcess {
   std::vector<std::string>& packages() { return packages_; }
   const std::vector<std::string>& packages() const { return packages_; }
 
+  // Returns true if the process is likely visible to the user. When it is
+  // visible, Chrome should not kill the process.
+  bool IsUserVisible() const;
+
+  // Returns true if it is okay for the kernel OOM killer to kill the process.
+  // TODO(cylee|yusukes): Check what stock Android does for handling OOM and
+  // adjust IsUserVisible() and/or IsKernelKillable() as needed.
+  // crbug.com/719537
+  bool IsKernelKillable() const;
+
  private:
   base::ProcessId nspid_;
   base::ProcessId pid_;