Added UMA metrics for ChromeOS first-run UI.

chrome/browser/chromeos/first_run/steps/help_step.cc

 // Copyright 2013 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/first_run/steps/help_step.h"
 
 #include "ash/first_run/first_run_helper.h"
 #include "chrome/browser/chromeos/first_run/step_names.h"
 #include "chrome/browser/ui/webui/chromeos/first_run/first_run_actor.h"
 #include "ui/gfx/rect.h"
 
 namespace {
 
 const int kCircleRadius = 19;
 
 }  // namespace
 
 namespace chromeos {
 namespace first_run {
 
 HelpStep::HelpStep(ash::FirstRunHelper* shell_helper, FirstRunActor* actor)
     : Step(kHelpStep, shell_helper, actor) {
 }
 
-void HelpStep::Show() {
+void HelpStep::DoShow() {
   if (!shell_helper()->IsTrayBubbleOpened())
     shell_helper()->OpenTrayBubble();
   gfx::Rect button_bounds = shell_helper()->GetHelpButtonBounds();
   gfx::Point center = button_bounds.CenterPoint();
   actor()->AddRoundHole(center.x(), center.y(), kCircleRadius);
   actor()->ShowStepPointingTo(name(), center.x(), center.y(), kCircleRadius);
 }
 
-void HelpStep::OnAfterHide() {
+void HelpStep::DoOnAfterHide() {
   shell_helper()->CloseTrayBubble();
 }
 
 }  // namespace first_run
 }  // namespace chromeos