chromeos: Add UMA stats for launcher and app list.

ash/launcher/launcher_view.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/launcher/launcher_view.h"
 
 #include <algorithm>
 
 #include "ash/launcher/app_list_button.h"
 #include "ash/launcher/launcher_button.h"
@@ skipping 1007 matching lines @@
     return;
   int view_index = view_model_->GetIndexOfView(sender);
   // May be -1 while in the process of animating closed.
   if (view_index == -1)
     return;
 
   tooltip_->Close();
   switch (model_->items()[view_index].type) {
     case TYPE_TABBED:
     case TYPE_APP_PANEL:
+      delegate_->ItemClicked(model_->items()[view_index], event.flags());
+      break;
+
     case TYPE_APP_SHORTCUT:
     case TYPE_PLATFORM_APP:
+      Shell::GetInstance()->delegate()->RecordUserMetricsAction(
+          UMA_LAUNCHER_CLICK_ON_APP);
       delegate_->ItemClicked(model_->items()[view_index], event.flags());
       break;
 
     case TYPE_APP_LIST:
+      Shell::GetInstance()->delegate()->RecordUserMetricsAction(
+          UMA_LAUNCHER_CLICK_ON_APPLIST_BUTTON);
       Shell::GetInstance()->ToggleAppList();
       break;
 
     case TYPE_BROWSER_SHORTCUT:
+      // Click on browser icon is counted in app clicks.
+      Shell::GetInstance()->delegate()->RecordUserMetricsAction(
+          UMA_LAUNCHER_CLICK_ON_APP);
+
       if (event.flags() & ui::EF_CONTROL_DOWN)
         delegate_->CreateNewWindow();
       else
         delegate_->CreateNewTab();
       break;
   }
 }
 
 void LauncherView::ShowContextMenuForView(views::View* source,
                                           const gfx::Point& point) {
@@ skipping 33 matching lines @@
   FOR_EACH_OBSERVER(LauncherIconObserver, observers_,
                     OnLauncherIconPositionsChanged());
   PreferredSizeChanged();
 }
 
 void LauncherView::OnBoundsAnimatorDone(views::BoundsAnimator* animator) {
 }
 
 }  // namespace internal
 }  // namespace ash