Override SigninManager::SignOut if force-signin is enabled.

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 400bb0f1f90c0a6620709ebaf8a0513da7e44cde..a0c20e5405af9aa11b0c523601e68efc41114dc9 100644
--- a/chrome/browser/resources/settings/people_page/people_page.js
+++ b/chrome/browser/resources/settings/people_page/people_page.js
@@ -247,9 +247,13 @@ Polymer({
   onDisconnectConfirm_: function() {
     var deleteProfile = !!this.syncStatus.domain ||
         (this.$.deleteProfile && this.$.deleteProfile.checked);
-    this.syncBrowserProxy_.signOut(deleteProfile);
-
-    this.$.disconnectDialog.close();
+    // Navigate to previous route before signout so session restore does
+    // not restore to the signout dialog. Dialog will be automatically
+    // closed by the route change.
+    settings.navigateToPreviousRoute();
+    setTimeout(function() {
+       this.syncBrowserProxy_.signOut(deleteProfile);
+    }.bind(this));
   },
 
   /** @private */