[cros] Don't display error notification on strange network state transitions.

chrome/browser/chromeos/cros/network_library.cc

Index: chrome/browser/chromeos/cros/network_library.cc
diff --git a/chrome/browser/chromeos/cros/network_library.cc b/chrome/browser/chromeos/cros/network_library.cc
index a347ec714b32544bfe482bdd594efcbc1802d900..42d7a529cae32cd3db0e7144bd82bc3aa19bfd8f 100644
--- a/chrome/browser/chromeos/cros/network_library.cc
+++ b/chrome/browser/chromeos/cros/network_library.cc
@@ -215,8 +215,11 @@ void Network::SetState(ConnectionState new_state) {
   ConnectionState old_state = state_;
   state_ = new_state;
   if (new_state == STATE_FAILURE) {
-    if (old_state != STATE_UNKNOWN) {
+    if (old_state != STATE_UNKNOWN &&
+        old_state != STATE_IDLE) {
       // New failure, the user needs to be notified.
+      // Transition STATE_IDLE -> STATE_FAILURE sometimes happens on resume
+      // but is not an actual failure as network device is not ready yet.
       notify_failure_ = true;
     }
   } else {