[cros] Added histograms for user image usage

chrome/browser/chromeos/login/user_controller.cc

 // Copyright (c) 2011 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/chromeos/login/user_controller.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/utf_string_conversions.h"
@@ skipping 191 matching lines @@
     unselected_label_view_->SetTooltipText(tooltip_text);
 }
 
 gfx::Rect UserController::GetMainInputScreenBounds() const {
   return user_input_->GetMainInputScreenBounds();
 }
 
 void UserController::OnUserImageChanged(UserManager::User* user) {
   if (user_.email() != user->email())
     return;
-  user_.set_image(user->image());
+  user_.SetImage(user->image(), user->default_image_index());
   // Controller might exist without windows,
   // i.e. if user pod doesn't fit on the screen.
   if (user_view_)
     user_view_->SetImage(user_.image(), user_.image());
 }
 
 void UserController::SelectUserRelative(int shift) {
   delegate_->SelectUser(user_index() + shift);
 }
 
@@ skipping 300 matching lines @@
 std::wstring UserController::GetNameTooltip() const {
   if (is_new_user_)
     return UTF16ToWide(l10n_util::GetStringUTF16(IDS_ADD_USER));
   else if (is_guest_)
     return UTF16ToWide(l10n_util::GetStringUTF16(IDS_GO_INCOGNITO_BUTTON));
   else
     return UTF8ToWide(user_.GetNameTooltip());
 }
 
 }  // namespace chromeos