Password bubble: Add an "active" icon state, and a new disabled icon.

chrome/browser/ui/passwords/manage_passwords_icon.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/passwords/manage_passwords_icon.h"
 
 ManagePasswordsIcon::ManagePasswordsIcon()
-    : state_(password_manager::ui::INACTIVE_STATE) {
+    : state_(password_manager::ui::INACTIVE_STATE),
+      active_(false) {
 }
 
 ManagePasswordsIcon::~ManagePasswordsIcon() {
 }
 
+void ManagePasswordsIcon::SetActive(bool active) {
+  if (active_ == active)
+    return;
+  active_ = active;
+  UpdateVisibleUI();
+}
+
 void ManagePasswordsIcon::SetState(password_manager::ui::State state) {
   if (state_ == state)
     return;
   state_ = state;
   UpdateVisibleUI();
 }