MD Settings: fix incorrect behavior with Enter on bluetooth item's icon-button.

chrome/browser/resources/settings/bluetooth_page/bluetooth_device_list_item.js

Index: chrome/browser/resources/settings/bluetooth_page/bluetooth_device_list_item.js
diff --git a/chrome/browser/resources/settings/bluetooth_page/bluetooth_device_list_item.js b/chrome/browser/resources/settings/bluetooth_page/bluetooth_device_list_item.js
index 4c17eaf4c877035208795728da40cc4b34ae1449..e8fb8c47c243c75b8d5bc089ff66b29bfc254925 100644
--- a/chrome/browser/resources/settings/bluetooth_page/bluetooth_device_list_item.js
+++ b/chrome/browser/resources/settings/bluetooth_page/bluetooth_device_list_item.js
@@ -21,6 +21,16 @@ Polymer({
     },
   },
 
+  /**
+   * @param {!Event} event
+   * @private
+   */
+  ignoreEnterKey_: function(event) {
+    if (event.key == 'Enter') {
+      event.stopPropagation();
+    }
+  },
+
   /**
    * @param {!Event} event
    * @private