Js fixed for proper status setting on HID screen.

chrome/browser/resources/chromeos/login/oobe_screen_hid_detection.js

Index: chrome/browser/resources/chromeos/login/oobe_screen_hid_detection.js
diff --git a/chrome/browser/resources/chromeos/login/oobe_screen_hid_detection.js b/chrome/browser/resources/chromeos/login/oobe_screen_hid_detection.js
index eb78cece55a5ede3bef128bff1cbb229359bd24d..88b5cbf461ebe0124e1c18deb54dbc97eaca2a21 100644
--- a/chrome/browser/resources/chromeos/login/oobe_screen_hid_detection.js
+++ b/chrome/browser/resources/chromeos/login/oobe_screen_hid_detection.js
@@ -169,13 +169,18 @@ login.createScreen('HIDDetectionScreen', 'hid-detection', function() {
       if (state == 'update')
         return;
       var deviceBlock = $(blockId);
-      for (var stateCase in this.CONNECTION)
+      for (var key in this.CONNECTION) {
+        var stateCase = this.CONNECTION[key];
         deviceBlock.classList.toggle(stateCase, stateCase == state);
+      }
 
       // 'Continue' button available iff at least one device is connected,
-      if ((blockId in this.BLOCK) &&
-          (state == this.CONNECTION.CONNECTED ||
-           state == this.CONNECTION.PAIRED)) {
+      var keyboardState = this.context.get(CONTEXT_KEY_KEYBOARD_STATE, '');

[Nikita (slow), 2015/02/26 12:10:08]

As discussed, please move this login to C++ side.

+      var mouseState = this.context.get(CONTEXT_KEY_MOUSE_STATE, '');
+      if (keyboardState == this.CONNECTION.CONNECTED ||
+          keyboardState == this.CONNECTION.PAIRED ||
+          mouseState == this.CONNECTION.CONNECTED ||
+          mouseState == this.CONNECTION.PAIRED) {
         $('hid-continue-button').disabled = false;
       } else {
         $('hid-continue-button').disabled = true;