Added UMA statistics for changing the active window via click or touch events.

ash/shell.cc

 // Copyright (c) 2012 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 "ash/shell.h"
 
 #include <algorithm>
 #include <string>
 
 #include "ash/accelerators/accelerator_controller.h"
@@ skipping 642 matching lines @@
   user_metrics_recorder_.reset(new UserMetricsRecorder);
 
 #if defined(OS_CHROMEOS)
   PowerStatus::Initialize();
 #endif
 }
 
 Shell::~Shell() {
   TRACE_EVENT0("shutdown", "ash::Shell::Destructor");
 
+  user_metrics_recorder_->OnShellShuttingDown();
+
   delegate_->PreShutdown();
 
   views::FocusManagerFactory::Install(NULL);
 
   // Remove the focus from any window. This will prevent overhead and side
   // effects (e.g. crashes) from changing focus during shutdown.
   // See bug crbug.com/134502.
   aura::client::GetFocusClient(GetPrimaryRootWindow())->FocusWindow(NULL);
 
   // Please keep in same order as in Init() because it's easy to miss one.
@@ skipping 405 matching lines @@
   video_activity_notifier_.reset(
       new VideoActivityNotifier(video_detector_.get()));
   bluetooth_notification_controller_.reset(new BluetoothNotificationController);
   last_window_closed_logout_reminder_.reset(new LastWindowClosedLogoutReminder);
   screen_orientation_controller_.reset(new ScreenOrientationController());
 #endif
   // The compositor thread and main message loop have to be running in
   // order to create mirror window. Run it after the main message loop
   // is started.
   display_manager_->CreateMirrorWindowAsyncIfAny();
+
+  user_metrics_recorder_->OnShellInitialized();
 }
 
 void Shell::InitKeyboard() {
   if (keyboard::IsKeyboardEnabled()) {
     if (keyboard::KeyboardController::GetInstance()) {
       RootWindowControllerList controllers = GetAllRootWindowControllers();
       for (RootWindowControllerList::iterator iter = controllers.begin();
            iter != controllers.end(); ++iter) {
         (*iter)->DeactivateKeyboard(
             keyboard::KeyboardController::GetInstance());
@@ skipping 81 matching lines @@
 
 void Shell::OnWindowActivated(
     aura::client::ActivationChangeObserver::ActivationReason reason,
     aura::Window* gained_active,
     aura::Window* lost_active) {
   if (gained_active)
     target_root_window_ = gained_active->GetRootWindow();
 }
 
 }  // namespace ash