Adds user metrics for tab overview.

chrome/browser/views/tabs/tab_overview_drag_controller.cc

 // Copyright (c) 2009 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/views/tabs/tab_overview_drag_controller.h"
 
 #include "chrome/browser/browser.h"
 #include "chrome/browser/browser_window.h"
 #include "chrome/browser/dock_info.h"
 #include "chrome/browser/gtk/browser_window_gtk.h"
+#include "chrome/browser/metrics/user_metrics.h"
 #include "chrome/browser/tab_contents/tab_contents.h"
 #include "chrome/browser/tabs/tab_strip_model.h"
 #include "chrome/browser/tab_contents/tab_contents.h"
 #include "chrome/browser/views/tabs/tab_overview_cell.h"
 #include "chrome/browser/views/tabs/tab_overview_controller.h"
 #include "chrome/browser/views/tabs/tab_overview_grid.h"
 #include "chrome/browser/views/tabs/tab_overview_types.h"
 #include "chrome/common/notification_service.h"
 #include "views/fill_layout.h"
 #include "views/view.h"
@@ skipping 65 matching lines @@
   if (original_index_ == -1)
     return;
 
   if (!dragging_ &&
       views::View::ExceededDragThreshold(location.x() - origin_.x(),
                                          location.y() - origin_.y())) {
     // Start dragging.
     dragging_ = true;
     controller_->DragStarted();
     grid()->set_floating_index(current_index_);
+    UserMetrics::RecordAction(L"TabOverview_DragCell",
+                              original_model_->profile());
   }
   if (dragging_)
     DragCell(location);
 }
 
 void TabOverviewDragController::CommitDrag(const gfx::Point& location) {
   if (original_index_ == -1)
     return;
 
   Drag(location);
   if (detached_tab_) {
     if (mouse_over_mini_window_) {
       // Dragged over a mini window, add as the last tab to the browser.
       Attach(model()->count());
+      UserMetrics::RecordAction(L"TabOverview_DropOnMiniWindow",
+                                original_model_->profile());
     } else {
       DropTab(location);
     }
   } else if (!dragging_ ) {
     // We haven't started dragging. Tell the controller to focus the browser.
     controller_->FocusBrowser();
   } else {
     // The tab is already in position, nothing to do but animate the change.
     grid()->set_floating_index(-1);
     grid()->AnimateToTargetBounds();
@@ skipping 207 matching lines @@
   detached_window_->Close();
   detached_window_ = NULL;
 }
 
 void TabOverviewDragController::Detach(const gfx::Point& location) {
   if (detached_tab_) {
     // Already detached.
     return;
   }
 
+  UserMetrics::RecordAction(L"TabOverview_DetachCell",
+                            original_model_->profile());
+
   detached_window_ = CreateDetachedWindow(
       location, model()->GetTabContentsAt(current_index_));
   detached_window_->Show();
 
   grid()->set_floating_index(-1);
   SetDetachedContents(model()->GetTabContentsAt(current_index_));
   if (model()->count() == 1) {
     // The model is going to be empty. Tell the host to move us offscreen.
     // NOTE: it would be nice to hide and destroy the window here but this
     // causes two problems: we'll stop getting events, and we don't want
@@ skipping 93 matching lines @@
                    Source<TabContents>(tab));
 
     // We need to be the delegate so we receive messages about stuff,
     // otherwise our dragged contents may be replaced and subsequently
     // collected/destroyed while the drag is in process, leading to
     // nasty crashes.
     original_delegate_ = tab->delegate();
     tab->set_delegate(this);
   }
 }