Add ManagePasswordsDecoration and unit tests.

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"
 
+#include "grit/generated_resources.h"
+#include "grit/theme_resources.h"
+
 ManagePasswordsIcon::ManagePasswordsIcon()
-    : state_(password_manager::ui::INACTIVE_STATE),
+    : icon_id_(0),
+      tooltip_text_id_(0),
+      state_(password_manager::ui::INACTIVE_STATE),
       active_(false) {
 }
 
 ManagePasswordsIcon::~ManagePasswordsIcon() {
 }
 
 void ManagePasswordsIcon::SetActive(bool active) {
   if (active_ == active)
     return;
   active_ = active;
+  UpdateIDs();
   UpdateVisibleUI();
 }
 
 void ManagePasswordsIcon::SetState(password_manager::ui::State state) {
   if (state_ == state)
     return;
   state_ = state;
+  UpdateIDs();
   UpdateVisibleUI();
 }
+
+void ManagePasswordsIcon::UpdateIDs() {
+  // If the icon is inactive: clear out its image and tooltip and exit early.
+  if (state() == password_manager::ui::INACTIVE_STATE) {
+    icon_id_ = 0;
+    tooltip_text_id_ = 0;
+    return;
+  }
+
+  // Otherwise, start with the correct values for MANAGE_STATE, and adjust
+  // things accordingly if we're either in BLACKLIST_STATE or PENDING_STATE.
+  icon_id_ = active() ? IDR_SAVE_PASSWORD_ACTIVE : IDR_SAVE_PASSWORD_INACTIVE;
+  tooltip_text_id_ = IDS_PASSWORD_MANAGER_TOOLTIP_MANAGE;
+  if (state() == password_manager::ui::BLACKLIST_STATE)
+    icon_id_ = active() ? IDR_SAVE_PASSWORD_DISABLED_ACTIVE
+                        : IDR_SAVE_PASSWORD_DISABLED_INACTIVE;
+  else if (password_manager::ui::IsPendingState(state()))
+    tooltip_text_id_ = IDS_PASSWORD_MANAGER_TOOLTIP_SAVE;
+}