MD Settings: Add import data dialog.

chrome/browser/resources/settings/people_page/people_page.js

Index: chrome/browser/resources/settings/people_page/people_page.js
diff --git a/chrome/browser/resources/settings/people_page/people_page.js b/chrome/browser/resources/settings/people_page/people_page.js
index a2a61b843133325e1f3f45d0a87edd745be30545..f023b7e072c814b80548104b261eb2f7404c0597 100644
--- a/chrome/browser/resources/settings/people_page/people_page.js
+++ b/chrome/browser/resources/settings/people_page/people_page.js
@@ -48,6 +48,14 @@ Polymer({
      */
     profileManagesSupervisedUsers_: Boolean,
 
+<if expr="not chromeos">
+    /** @private */
+    showImportDataDialog_: {
+      type: Boolean,
+      value: false,
+    },
+</if>
+
     /** @private {!settings.SyncBrowserProxy} */
     syncBrowserProxy_: {
       type: Object,
@@ -329,6 +337,16 @@ Polymer({
         '<span id="managed-by-domain-name">' + domain + '</span>';
     return loadTimeData.getStringF('domainManagedProfile', innerSpan);
   },
+
+  /** @private */
+  onImportDataTap_: function() {
+    this.showImportDataDialog_ = true;
+  },
+
+  /** @private */
+  onImportDataDialogClosed_: function() {
+    this.showImportDataDialog_ = false;
+  },
 </if>
 
   /**