MD Settings, cleanup: Remove obsolete references to paper-dialog, paper-item.

BUG=None
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2932913003
Cr-Commit-Position: refs/heads/master@{#478699}

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

@@ -98,7 +98,7 @@ Polymer({
 
     /**
      * Set to the name of the dialog to show. This page uses a single
-     * paper-dialog to host one of two dialog elements: 'pairDevice' or
+     * dialog to host one of two dialog elements: 'pairDevice' or
      * 'connectError'. This allows a seamless transition between dialogs.
      * Note: This property should be set before opening the dialog and setting
      * the property will not itself cause the dialog to open.

chrome/browser/resources/settings/languages_page/edit_dictionary_page.js

@@ -111,7 +111,7 @@ Polymer({
   },
 
   /**
-   * Handles tapping on a paper-item's Remove Word icon button.
+   * Handles tapping on a "Remove word" icon button.
    * @param {!{model: !{item: string}}} e
    */
   onRemoveWordTap_: function(e) {

chrome/browser/resources/settings/settings_vars_css.html

@@ -94,7 +94,6 @@
     --iron-icon-height: var(--cr-icon-size);
     --iron-icon-width: var(--cr-icon-size);
     --paper-checkbox-label-color: inherit;
-    --paper-dialog-color: inherit;
 
     --paper-icon-button: {
       /**