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

LayoutTests/netinfo/resources/web-worker.js

Index: LayoutTests/netinfo/resources/web-worker.js
diff --git a/LayoutTests/netinfo/resources/web-worker.js b/LayoutTests/netinfo/resources/web-worker.js
index 32b8bc40acb7e437ee3f1227f9682163e55144bc..ee7656db62f67081cde49f17669a504d71159a7c 100644
--- a/LayoutTests/netinfo/resources/web-worker.js
+++ b/LayoutTests/netinfo/resources/web-worker.js
@@ -1,7 +1,7 @@
 addEventListener('message', function(e) {
-    self.postMessage(navigator.connection.type);
+    self.postMessage(navigator.connection.type + ',' + navigator.connection.downlinkMax);
 }, false);
 
-navigator.connection.addEventListener('typechange', function() {
-    self.postMessage(navigator.connection.type);
-}, false);
+navigator.connection.addEventListener('change', function() {
+    self.postMessage(navigator.connection.type + ',' + navigator.connection.downlinkMax);
+}, false);