Gut ash::MaterialDesignController, and remove the about:flags entry.

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"
 
 namespace ash {
 
 const int kPaddingFromRightEdgeOfScreenBottomAlignment = 7;
 const int kPaddingFromBottomOfScreenBottomAlignment = 7;
 const int kPaddingFromOuterEdgeOfLauncherVerticalAlignment = 8;
 const int kPaddingFromInnerEdgeOfLauncherVerticalAlignment = 9;
@@ skipping 102 matching lines @@
   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, 100, 100};
   const int kTrayPopupTransitionToDetailedViewDelayMs[] = {0, 100, 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);
-
+  // TODO(estade): clean this up --- remove unneeded constants and reduce
+  // remaining arrays to a single constant.
+  const int mode = 1;
   switch (constant) {
     case TRAY_ITEM_HEIGHT_LEGACY:
       return kTrayItemHeightLegacy[mode];
     case TRAY_SPACING:
       return kTraySpacing[mode];
     case TRAY_PADDING_FROM_EDGE_OF_SHELF:
       return kTrayPaddingFromEdgeOfShelf[mode];
     case TRAY_POPUP_ITEM_MIN_HEIGHT:
       return kTrayPopupItemMinHeight[mode];
     case TRAY_POPUP_ITEM_MAX_HEIGHT:
@@ skipping 21 matching lines @@
     case TRAY_IME_MENU_ICON:
       return kTrayImeMenuIcon[mode];
     case TRAY_IMAGE_ITEM_PADDING:
       return kTrayImageItemPadding[mode];
   }
   NOTREACHED();
   return 0;
 }
 
 }  // namespace ash