Adding observer functionality to UINetworkQualityService

net/nqe/network_quality_estimator.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_NQE_NETWORK_QUALITY_ESTIMATOR_H_
 #define NET_NQE_NETWORK_QUALITY_ESTIMATOR_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 138 matching lines @@
    private:
     DISALLOW_COPY_AND_ASSIGN(ThroughputObserver);
   };
 
   // Provides simple interface to obtain the effective connection type.
   class NET_EXPORT NetworkQualityProvider {
    public:
     // Returns the current effective connection type.
     virtual EffectiveConnectionType GetEffectiveConnectionType() const = 0;
 
+    // Adds |observer| to a list of effective connection type observers.
+    virtual void AddEffectiveConnectionTypeObserver(
+        EffectiveConnectionTypeObserver* observer) = 0;
+
+    // Removes |observer| from a list of effective connection type observers.
+    virtual void RemoveEffectiveConnectionTypeObserver(
+        EffectiveConnectionTypeObserver* observer) = 0;
+
     virtual ~NetworkQualityProvider() {}
 
    protected:
     NetworkQualityProvider() {}
 
    private:
     DISALLOW_COPY_AND_ASSIGN(NetworkQualityProvider);
   };
 
   // Creates a new NetworkQualityEstimator.
@@ skipping 558 matching lines @@
   base::ThreadChecker thread_checker_;
 
   base::WeakPtrFactory<NetworkQualityEstimator> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkQualityEstimator);
 };
 
 }  // namespace net
 
 #endif  // NET_NQE_NETWORK_QUALITY_ESTIMATOR_H_