CrOS files app: Stop using <paper-dialog>, use plain <dialog> instead.

ui/file_manager/file_manager/foreground/elements/files_quick_view.html

Index: ui/file_manager/file_manager/foreground/elements/files_quick_view.html
diff --git a/ui/file_manager/file_manager/foreground/elements/files_quick_view.html b/ui/file_manager/file_manager/foreground/elements/files_quick_view.html
index 8cff994d6c83528c389299af6327ddcbde157357..5b17c5d1c196c8c6d78115d550107375e67466ae 100644
--- a/ui/file_manager/file_manager/foreground/elements/files_quick_view.html
+++ b/ui/file_manager/file_manager/foreground/elements/files_quick_view.html
@@ -6,7 +6,6 @@
 <link rel="import" href="chrome://resources/polymer/v1_0/polymer/polymer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-icon/iron-icon.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-button/paper-button.html">
-<link rel="import" href="chrome://resources/polymer/v1_0/paper-dialog/paper-dialog.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-toolbar/paper-toolbar.html">
 <link rel="import" href="files_icon_button.html">
 <link rel="import" href="files_metadata_box.html">
@@ -17,7 +16,7 @@
 <dom-module id="files-quick-view">
   <link rel="import" type="css" href="files_quick_view.css">
   <template>
-    <paper-dialog id="dialog" modal>
+    <dialog id="dialog">
       <paper-toolbar id="toolbar">
         <div>[[filePath]]</div>
         <div id="buttons">
@@ -77,7 +76,7 @@
           </div> <!-- contentPanel -->
         <files-metadata-box id="metadata-box" hidden$="[[!metadataBoxActive]]"></file-metadata-box>
       </div> <!-- mainPanel -->
-    </paper-dialog>
+    </dialog>
     <files-tooltip></files-tooltip>
   </template>
 </dom-module>