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

public/web/WebNetworkStateNotifier.h

 /*
  * Copyright (C) 2011 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 21 matching lines @@
 #define WebNetworkStateNotifier_h
 
 #include "../platform/WebCommon.h"
 #include "../platform/WebConnectionType.h"
 
 namespace blink {
 
 class WebNetworkStateNotifier {
 public:
     BLINK_EXPORT static void setOnLine(bool);
+    // Remove after browser-side starts using setWebConnection.
     BLINK_EXPORT static void setWebConnectionType(WebConnectionType);
+    BLINK_EXPORT static void setWebConnection(WebConnectionType, double maxBandwidthMbps);
 
 private:
     WebNetworkStateNotifier();
 };
 
 } // namespace blink
 
 #endif