Start removing some pre-md constants and related code.

ash/common/system/tray/tray_details_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/common/system/tray/tray_details_view.h"
 
 #include "ash/common/ash_view_ids.h"
 #include "ash/common/material_design/material_design_controller.h"
 #include "ash/common/system/tray/system_menu_button.h"
 #include "ash/common/system/tray/system_tray.h"
 #include "ash/common/system/tray/system_tray_item.h"
 #include "ash/common/system/tray/tray_constants.h"
 #include "ash/common/system/tray/tray_popup_item_style.h"
 #include "ash/common/system/tray/tray_popup_utils.h"
 #include "ash/common/system/tray/tri_view.h"
 #include "base/containers/adapters.h"
 #include "base/memory/ptr_util.h"
-#include "base/timer/timer.h"
 #include "grit/ash_strings.h"
 #include "third_party/skia/include/core/SkDrawLooper.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/compositor/paint_context.h"
 #include "ui/compositor/paint_recorder.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/skia_paint_util.h"
 #include "ui/views/background.h"
 #include "ui/views/border.h"
 #include "ui/views/controls/label.h"
@@ skipping 422 matching lines @@
       owner_->set_restore_focus(true);
   } else {
     if (title_row_ && title_row_->content() &&
         title_row_->content()->HasFocus()) {
       owner_->set_restore_focus(true);
     }
     DoTransitionToDefaultView();
     return;
   }
 
-  const int transition_delay =
-      GetTrayConstant(TRAY_POPUP_TRANSITION_TO_DEFAULT_DELAY);
-  if (transition_delay <= 0) {
-    DoTransitionToDefaultView();
-    return;
-  }
-
-  transition_delay_timer_.reset(new base::OneShotTimer());
-  transition_delay_timer_->Start(
-      FROM_HERE, base::TimeDelta::FromMilliseconds(transition_delay), this,
-      &TrayDetailsView::DoTransitionToDefaultView);
+  transition_delay_timer_.Start(
+      FROM_HERE,
+      base::TimeDelta::FromMilliseconds(kTrayDetailedViewTransitionDelayMs),
+      this, &TrayDetailsView::DoTransitionToDefaultView);
 }
 
 void TrayDetailsView::DoTransitionToDefaultView() {
-  transition_delay_timer_.reset();
-
   // Cache pointer to owner in this function scope. TrayDetailsView will be
   // deleted after called ShowDefaultView.
   SystemTrayItem* owner = owner_;
   owner->system_tray()->ShowDefaultView(BUBBLE_USE_EXISTING);
   owner->set_restore_focus(false);
 }
 
 views::Button* TrayDetailsView::CreateBackButton() {
   DCHECK(UseMd());
   SystemMenuButton* button = new SystemMenuButton(
@@ skipping 24 matching lines @@
     if (index < child_count() - 1 && child_at(index + 1) != title_row_)
       scroll_border_->set_visible(true);
     else
       scroll_border_->set_visible(false);
   }
 
   views::View::OnPaintBorder(canvas);
 }
 
 }  // namespace ash