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

Source/core/testing/Internals.idl

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 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.
@@ skipping 291 matching lines @@
     DOMString textSurroundingNode(Node node, long x, long y, unsigned long maxLength);
 
     void setFocused(boolean focused);
     void setInitialFocus(boolean reverse);
 
     [TypeChecking=Interface] boolean ignoreLayoutWithPendingStylesheets(Document document);
 
     // These functions are for testing NetInfo. You must call setNetworkStateNotifierTestOnly(true)
     // before calling setNetworkConnectionInfo.
     void setNetworkStateNotifierTestOnly(boolean testOnly);
-    [RaisesException] void setNetworkConnectionInfo(DOMString type);
+    [RaisesException] void setNetworkConnectionInfo(DOMString type, double downlinkMaxMbps);
 
     // This function is for testing HitRegions on Canvas2D.
     unsigned long countHitRegions(CanvasRenderingContext2D context);
 
     [TypeChecking=Interface] boolean isInCanvasFontCache(Document document, DOMString fontString);
     [TypeChecking=Interface] unsigned long canvasFontCacheMaxFonts();
 
     [TypeChecking=Interface] ClientRect boundsInViewportSpace(Element element);
 
     DictionaryTest dictionaryTest();
@@ skipping 15 matching lines @@
 
     ClientRectList outlineRects(Element element);
     void setCapsLockState(boolean enabled);
 
     // Returns whether the scrollbar was able to be shown or hidden; not all platforms
     // support overlay scrollbars.
     bool setScrollbarVisibilityInScrollableArea(Node node, boolean visible);
 
     void forceRestrictIFramePermissions();
 };