[Ash] Remove |highlight| field from NetworkInfo struct

ash/system/network/network_info.h

Index: ash/system/network/network_info.h
diff --git a/ash/system/network/network_info.h b/ash/system/network/network_info.h
index 814a6be7ee1a18bcb9700e335c2a210e47022f16..d0055fd5540013654a0a435180bc721fc2b22b65 100644
--- a/ash/system/network/network_info.h
+++ b/ash/system/network/network_info.h
@@ -18,7 +18,6 @@ namespace ash {
 
 // Includes information necessary about a network for displaying the appropriate
 // UI to the user.
-// TODO(tdanderson): Remove the |highlight| member. See crbug.com/708190.
 struct NetworkInfo {
   enum class Type { UNKNOWN, WIFI, TETHER, CELLULAR };
 
@@ -34,7 +33,6 @@ struct NetworkInfo {
   base::string16 tooltip;
   gfx::ImageSkia image;
   bool disable;
-  bool highlight;
   bool connected;
   bool connecting;
   Type type;