Single pod autofocus disabled for touch view mode. Delegate class created for ash interactions.

ui/login/account_picker/screen_account_picker.js

Index: ui/login/account_picker/screen_account_picker.js
diff --git a/ui/login/account_picker/screen_account_picker.js b/ui/login/account_picker/screen_account_picker.js
index e1dbd6664256dac5ce141dd46b5bf8374038cbd3..fc87cc438e8d7c4b6a246f2e06aa0341ac9679a4 100644
--- a/ui/login/account_picker/screen_account_picker.js
+++ b/ui/login/account_picker/screen_account_picker.js
@@ -29,6 +29,7 @@ login.createScreen('AccountPickerScreen', 'account-picker', function() {
       'showUserPodCustomIcon',
       'hideUserPodCustomIcon',
       'setAuthType',
+      'setTouchViewState',
       'setPublicSessionDisplayName',
       'setPublicSessionLocales',
       'setPublicSessionKeyboardLayouts',
@@ -113,6 +114,7 @@ login.createScreen('AccountPickerScreen', 'account-picker', function() {
      * Event handler invoked when the page is shown and ready.
      */
     onShow: function() {
+      chrome.send('getTouchViewState');
       if (!this.firstShown_) return;
       this.firstShown_ = false;
 
@@ -304,6 +306,14 @@ login.createScreen('AccountPickerScreen', 'account-picker', function() {
     },
 
     /**
+     * Sets the state of touch view mode.
+     * @param {boolean} isTouchViewEnabled true if the mode is on.
+     */
+    setTouchViewState: function(isTouchViewEnabled) {
+      $('pod-row').setTouchViewState(isTouchViewEnabled);
+    },
+
+    /**
      * Updates the display name shown on a public session pod.
      * @param {string} userID The user ID of the public session
      * @param {string} displayName The new display name