[NetInfo] Add Blink support for connection.change, connection.downlinkMax, and wimax

Source/core/page/NetworkStateNotifier.h

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 26 matching lines @@
 namespace blink {
 
 class ExecutionContext;
 
 class CORE_EXPORT NetworkStateNotifier {
     WTF_MAKE_NONCOPYABLE(NetworkStateNotifier); WTF_MAKE_FAST_ALLOCATED(NetworkStateNotifier);
 public:
     class NetworkStateObserver {
     public:
         // Will be called on the thread of the context passed in addObserver.
-        virtual void connectionTypeChange(WebConnectionType) = 0;
+        virtual void connectionChange(WebConnectionType, double) = 0;

[adamk, 2015/08/28 00:55:31]

The second argument here needs a name.

[jkarlin, 2015/09/02 17:37:06]

Done.

     };
 
     NetworkStateNotifier()
         : m_isOnLine(true)
         , m_type(ConnectionTypeOther)
+        , m_maxBandwidth(std::numeric_limits<double>::infinity())
         , m_testUpdatesOnly(false)
     {
     }
 
+    // Can be called on any thread.
     bool onLine() const
     {
         MutexLocker locker(m_mutex);
         return m_isOnLine;
     }
 
     void setOnLine(bool);
 
+    // Can be called on any thread.
     WebConnectionType connectionType() const
     {
         MutexLocker locker(m_mutex);
         return m_type;
     }
 
-    void setWebConnectionType(WebConnectionType);
+    // Can be called on any thread.
+    double maxBandwidth() const
+    {
+        MutexLocker locker(m_mutex);
+        return m_maxBandwidth;
+    }
+
+    void setWebConnection(WebConnectionType, double);

[adamk, 2015/08/28 00:55:31]

Same here.

[jkarlin, 2015/09/02 17:37:07]

Done.

 
     // Must be called on the context's thread. An added observer must be removed
     // before its ExecutionContext is deleted. It's possible for an observer to
     // be called twice for the same event if it is first removed and then added
     // during notification.
     void addObserver(NetworkStateObserver*, ExecutionContext*);
     void removeObserver(NetworkStateObserver*, ExecutionContext*);
 
     // The following functions are for testing purposes.
 
     // When true, setWebConnectionType calls are ignored and only setWebConnectionTypeForTest
     // can update the connection type. This is used for layout tests (see crbug.com/377736).
     void setTestUpdatesOnly(bool);
     // Tests should call this as it will change the type regardless of the value of m_testUpdatesOnly.
-    void setWebConnectionTypeForTest(WebConnectionType);
+    void setWebConnectionForTest(WebConnectionType, double);

[adamk, 2015/08/28 00:55:31]

Same here.

[jkarlin, 2015/09/02 17:37:06]

Done.

 
 private:
     struct ObserverList {
         ObserverList()
             : iterating(false)
         {
         }
         bool iterating;
         Vector<NetworkStateObserver*> observers;
         Vector<size_t> zeroedObservers; // Indices in observers that are 0.
     };
 
-    void setWebConnectionTypeImpl(WebConnectionType);
+    void setWebConnectionImpl(WebConnectionType, double);

[adamk, 2015/08/28 00:55:31]

And here

[jkarlin, 2015/09/02 17:37:06]

Done.

+    void setMaxBandwidthImpl(double);
 
     using ObserverListMap = HashMap<ExecutionContext*, OwnPtr<ObserverList>>;
 
-    void notifyObserversOnContext(WebConnectionType, ExecutionContext*);
+    void notifyObserversOfConnectionChangeOnContext(WebConnectionType, double, ExecutionContext*);

[adamk, 2015/08/28 00:55:31]

And here

[jkarlin, 2015/09/02 17:37:07]

Done.

 
     ObserverList* lockAndFindObserverList(ExecutionContext*);
 
     // Removed observers are nulled out in the list in case the list is being
     // iterated over. Once done iterating, call this to clean up nulled
     // observers.
     void collectZeroedObservers(ObserverList*, ExecutionContext*);
 
     mutable Mutex m_mutex;
     bool m_isOnLine;
     WebConnectionType m_type;
+    double m_maxBandwidth;
     ObserverListMap m_observers;
     bool m_testUpdatesOnly;
 };
 
 CORE_EXPORT NetworkStateNotifier& networkStateNotifier();
 
 } // namespace blink
 
 #endif // NetworkStateNotifier_h