Migrate simple ash Shell metrics users.

ash/shelf/shelf_button_pressed_metric_tracker.cc

 // Copyright 2015 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/shelf/shelf_button_pressed_metric_tracker.h"
 
-#include "ash/metrics/user_metrics_recorder.h"
-#include "ash/shell.h"
+#include "ash/common/wm_shell.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/time/default_tick_clock.h"
 #include "ui/views/controls/button/button.h"
 
 namespace ash {
 
 const char ShelfButtonPressedMetricTracker::
     kTimeBetweenWindowMinimizedAndActivatedActionsHistogramName[] =
         "Ash.Shelf.TimeBetweenWindowMinimizedAndActivatedActions";
 
@@ skipping 25 matching lines @@
       break;
   }
 
   if (performed_action != ShelfItemDelegate::kExistingWindowMinimized)
     ResetMinimizedData();
 }
 
 void ShelfButtonPressedMetricTracker::RecordButtonPressedSource(
     const ui::Event& event) {
   if (event.IsMouseEvent()) {
-    Shell::GetInstance()->metrics()->RecordUserMetricsAction(
+    WmShell::Get()->RecordUserMetricsAction(
         UMA_LAUNCHER_BUTTON_PRESSED_WITH_MOUSE);
   } else if (event.IsGestureEvent()) {
-    Shell::GetInstance()->metrics()->RecordUserMetricsAction(
+    WmShell::Get()->RecordUserMetricsAction(
         UMA_LAUNCHER_BUTTON_PRESSED_WITH_TOUCH);
   }
 }
 
 void ShelfButtonPressedMetricTracker::RecordButtonPressedAction(
     ShelfItemDelegate::PerformedAction performed_action) {
   switch (performed_action) {
     case ShelfItemDelegate::kNoAction:
     case ShelfItemDelegate::kAppListMenuShown:
       break;
     case ShelfItemDelegate::kNewWindowCreated:
-      Shell::GetInstance()->metrics()->RecordUserMetricsAction(
-          UMA_LAUNCHER_LAUNCH_TASK);
+      WmShell::Get()->RecordUserMetricsAction(UMA_LAUNCHER_LAUNCH_TASK);
       break;
     case ShelfItemDelegate::kExistingWindowActivated:
-      Shell::GetInstance()->metrics()->RecordUserMetricsAction(
-          UMA_LAUNCHER_SWITCH_TASK);
+      WmShell::Get()->RecordUserMetricsAction(UMA_LAUNCHER_SWITCH_TASK);
       break;
     case ShelfItemDelegate::kExistingWindowMinimized:
-      Shell::GetInstance()->metrics()->RecordUserMetricsAction(
-          UMA_LAUNCHER_MINIMIZE_TASK);
+      WmShell::Get()->RecordUserMetricsAction(UMA_LAUNCHER_MINIMIZE_TASK);
       break;
   }
 }
 
 void ShelfButtonPressedMetricTracker::RecordTimeBetweenMinimizedAndActivated() {
   UMA_HISTOGRAM_TIMES(
       kTimeBetweenWindowMinimizedAndActivatedActionsHistogramName,
       tick_clock_->NowTicks() - time_of_last_minimize_);
 }
 
 bool ShelfButtonPressedMetricTracker::IsSubsequentActivationEvent(
     const views::Button* sender) const {
   return time_of_last_minimize_ != base::TimeTicks() &&
          last_minimized_source_button_ == sender;
 }
 
 void ShelfButtonPressedMetricTracker::SetMinimizedData(
     const views::Button* sender) {
   last_minimized_source_button_ = sender;
   time_of_last_minimize_ = tick_clock_->NowTicks();
 }
 
 void ShelfButtonPressedMetricTracker::ResetMinimizedData() {
   last_minimized_source_button_ = nullptr;
   time_of_last_minimize_ = base::TimeTicks();
 }
 
 }  // namespace ash