Fix handling for click that brings lock screen app to foreground

ui/login/account_picker/md_screen_account_picker.js

Index: ui/login/account_picker/md_screen_account_picker.js
diff --git a/ui/login/account_picker/md_screen_account_picker.js b/ui/login/account_picker/md_screen_account_picker.js
index 88ca6736d29011c8e2b851dff02530fac037c0be..5e4d45c99126421d90a77803d2df92624232a328 100644
--- a/ui/login/account_picker/md_screen_account_picker.js
+++ b/ui/login/account_picker/md_screen_account_picker.js
@@ -116,6 +116,10 @@ login.createScreen('AccountPickerScreen', 'account-picker', function() {
      */
     onBeforeShow: function(data) {
       this.showing_ = true;
+
+      this.ownerDocument.addEventListener('click',
+          this.handleOwnerDocClick_.bind(this));
+
       chrome.send('loginUIStateChanged', ['account-picker', true]);
       $('login-header-bar').signinUIState = SIGNIN_UI_STATE.ACCOUNT_PICKER;
       // Header bar should be always visible on Account Picker screen.
@@ -480,11 +484,6 @@ login.createScreen('AccountPickerScreen', 'account-picker', function() {
 
       this.lockScreenAppsState_ = state;
       $('login-header-bar').lockScreenAppsState = state;
-      // When an lock screen app window is in background - i.e. visible behind
-      // the lock screen UI - dim the lock screen background, so it's more
-      // noticeable that the app widow in background is not actionable.
-      $('background').classList.toggle(
-          'dimmed-background', state == LOCK_SCREEN_APPS_STATE.BACKGROUND);
     },
 
     /**
@@ -496,7 +495,8 @@ login.createScreen('AccountPickerScreen', 'account-picker', function() {
      */
     handleOwnerDocClick_: function(event) {
       if (this.lockScreenAppsState_  != LOCK_SCREEN_APPS_STATE.BACKGROUND ||

[xiyuan, 2017/06/20 21:39:16]

nit: strip 1 space before "!=" since you are here. :)

[tbarzic, 2017/06/20 22:07:57]

Done.

-          event.target != $('outer-container')) {
+          (event.target != $('account-picker') &&
+           event.target != $('version'))) {
         return;
       }
       chrome.send('setLockScreenAppsState',