cros: Allow pin keyboard to keep focus without popping up the pin keyboard.

ui/login/account_picker/user_pod_row.js

Index: ui/login/account_picker/user_pod_row.js
diff --git a/ui/login/account_picker/user_pod_row.js b/ui/login/account_picker/user_pod_row.js
index 54df155a8cf1dfdc590cfccf2502624ad46c25ee..08ac15110aeab7a9fbb655305f49bb371c79238e 100644
--- a/ui/login/account_picker/user_pod_row.js
+++ b/ui/login/account_picker/user_pod_row.js
@@ -714,8 +714,9 @@ cr.define('login', function() {
       this.addEventListener('mousedown', this.handlePodMouseDown_.bind(this));
 
       if (this.pinKeyboard) {
+        this.pinKeyboard.passwordElement = this.passwordElement;
         this.pinKeyboard.addEventListener('pin-change',
-            this.handlePinChanged_.bind(this));
+            this.handleInputChanged_.bind(this));
       }
 
       this.actionBoxAreaElement.addEventListener('mousedown',
@@ -755,6 +756,8 @@ cr.define('login', function() {
           this.handlePasswordKeyPress_.bind(this));
       this.passwordElement.addEventListener('input',
           this.handleInputChanged_.bind(this));
+      this.passwordElement.addEventListener('mouseup',
+          this.handleInputMouseUp_.bind(this));
 
       if (this.submitButton) {
         this.submitButton.addEventListener('click',
@@ -1167,6 +1170,8 @@ cr.define('login', function() {
       // Change the password placeholder based on pin keyboard visibility.
       this.passwordElement.placeholder = loadTimeData.getString(visible ?
           'pinKeyboardPlaceholderPinPassword' : 'passwordHint');
+
+      chrome.send('setForceDisableVirtualKeyboard', [visible]);
     },
 
     isPinShown: function() {
@@ -1867,24 +1872,24 @@ cr.define('login', function() {
     },
 
     /**
-     * Handles pin change event from the pin keyboard.
-     * @param {Event} e Pin change event.
+     * Handles input event on the password element.
+     * @param {Event} e Input event.
      */
-    handlePinChanged_: function(e) {
-      this.passwordElement.value = e.detail.pin;
+    handleInputChanged_: function(e) {
       this.updateInput_();
     },
 
     /**
-     * Handles input event on the password element.
-     * @param {Event} e Input event.
+     * Handles mouse up event on the password element.
+     * @param {Event} e Mouse up event.
      */
-    handleInputChanged_: function(e) {
-      if (this.pinKeyboard)
-        this.pinKeyboard.value = this.passwordElement.value;
-      if (this.submitButton)
-        this.submitButton.disabled = this.passwordElement.value.length <= 0;
-      this.updateInput_();
+    handleInputMouseUp_: function(e) {
+      // If the PIN keyboard is shown and the user clicks on the password
+      // element, the virtual keyboard should pop up if it is enabled, so we
+      // must disable the virtual keyboard override.
+      if (this.isPinShown()) {
+        chrome.send('setForceDisableVirtualKeyboard', [false]);
+      }
     },
 
     /**