NQE: Use cached estimates

net/nqe/network_qualities_prefs_manager.h

Index: net/nqe/network_qualities_prefs_manager.h
diff --git a/net/nqe/network_qualities_prefs_manager.h b/net/nqe/network_qualities_prefs_manager.h
index 591510968665cb4a7049a51a9e3957d4a5a0ada4..102b88ed31a4fbdef7cd2d4748856ee8916d531b 100644
--- a/net/nqe/network_qualities_prefs_manager.h
+++ b/net/nqe/network_qualities_prefs_manager.h
@@ -55,7 +55,7 @@ class NET_EXPORT NetworkQualitiesPrefsManager
     virtual void SetDictionaryValue(const base::DictionaryValue& value) = 0;
 
     // Returns the peristent prefs.

[RyanSturm, 2016/12/13 21:08:35]

nit: s/the persistent/a copy of the persistent/

[tbansal1, 2016/12/14 01:37:37]

Done.

-    virtual const base::DictionaryValue& GetDictionaryValue() = 0;
+    virtual std::unique_ptr<base::DictionaryValue> GetDictionaryValue() = 0;
   };
 
   // Creates an instance of the NetworkQualitiesPrefsManager. Ownership of