[ash-md] Added a delay between system menu default/detailed view transitions.

ash/common/system/tray/tray_constants.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_constants.h"
 
 #include "ash/common/material_design/material_design_controller.h"
 #include "base/logging.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/gfx/color_palette.h"
@@ skipping 96 matching lines @@
   const int kTrayPaddingFromEdgeOfShelf[] = {3, 4, 4};
   const int kTrayPopupItemHeight[] = {46, 48, 48};
   // FixedSizedImageViews use the contained ImageView's width for 0 values.
   const int kTrayPopupItemMainImageRegionWidth[] = {0, 48, 48};
   const int kTrayPopupItemMoreImageSize[] = {25, kMenuIconSize, kMenuIconSize};
   const int kTrayPopupItemMoreRegionHorizontalInset[] = {10, 10, 10};
   const int kTrayPopupItemLeftInset[] = {0, 4, 4};
   const int kTrayPopupItemRightInset[] = {0, 0, 0};
   const int kTrayPopupItemMinStartWidth[] = {46, 48, 48};
   const int kTrayPopupItemMinEndWidth[] = {40, 40, 40};
+  const int kTrayPopupTransitionToDefaultViewDelayMs[] = {0, 80, 100};

[tdanderson, 2016/11/13 20:09:02]

I'm OK with trying this approach, given that we have a really easy way to revert
back to a zero delay in beta if needed (i.e., changing these values to 0).

[bruthig, 2016/11/13 20:47:51]

Acknowledged.

+  const int kTrayPopupTransitionToDetailedViewDelayMs[] = {0, 80, 100};
   const int kVirtualKeyboardButtonSize[] = {39, kTrayItemSize, kTrayItemSize};
   const int kTrayImeMenuIcon[] = {40, kTrayItemSize, kTrayItemSize};
   const int kTrayImageItemPadding[] = {1, 3, 3};
 
   const int mode = MaterialDesignController::GetMode();
   DCHECK(mode >= MaterialDesignController::NON_MATERIAL &&
          mode <= MaterialDesignController::MATERIAL_EXPERIMENTAL);
 
   switch (constant) {
     case TRAY_ITEM_HEIGHT_LEGACY:
@@ skipping 11 matching lines @@
     case TRAY_POPUP_ITEM_MORE_REGION_HORIZONTAL_INSET:
       return kTrayPopupItemMoreRegionHorizontalInset[mode];
     case TRAY_POPUP_ITEM_LEFT_INSET:
       return kTrayPopupItemLeftInset[mode];
     case TRAY_POPUP_ITEM_RIGHT_INSET:
       return kTrayPopupItemRightInset[mode];
     case TRAY_POPUP_ITEM_MIN_START_WIDTH:
       return kTrayPopupItemMinStartWidth[mode];
     case TRAY_POPUP_ITEM_MIN_END_WIDTH:
       return kTrayPopupItemMinEndWidth[mode];
+    case TRAY_POPUP_TRANSITION_TO_DEFAULT_DELAY:
+      return kTrayPopupTransitionToDefaultViewDelayMs[mode];
+    case TRAY_POPUP_TRANSITION_TO_DETAILED_DELAY:
+      return kTrayPopupTransitionToDetailedViewDelayMs[mode];
     case VIRTUAL_KEYBOARD_BUTTON_SIZE:
       return kVirtualKeyboardButtonSize[mode];
     case TRAY_IME_MENU_ICON:
       return kTrayImeMenuIcon[mode];
     case TRAY_IMAGE_ITEM_PADDING:
       return kTrayImageItemPadding[mode];
   }
   NOTREACHED();
   return 0;
 }
 
 }  // namespace ash