Apply new MD shadows to CrOS tray bubbles.

ash/common/system/chromeos/palette/palette_tray.cc

 // Copyright 2016 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/chromeos/palette/palette_tray.h"
 
 #include "ash/common/material_design/material_design_controller.h"
 #include "ash/common/session/session_state_delegate.h"
 #include "ash/common/shelf/shelf_constants.h"
 #include "ash/common/shelf/wm_shelf.h"
@@ skipping 222 matching lines @@
 }
 
 bool PaletteTray::ShowPalette() {
   if (bubble_)
     return false;
 
   DCHECK(tray_container());
 
   views::TrayBubbleView::InitParams init_params(GetAnchorAlignment(),
                                                 kPaletteWidth, kPaletteWidth);
-  init_params.can_activate = true;
   init_params.close_on_deactivate = true;
 
   DCHECK(tray_container());
 
   // The views::TrayBubbleView ctor will cause a shelf auto hide update check.
   // Make sure to block auto hiding before that check happens.
   should_block_shelf_auto_hide_ = true;
 
   // TODO(tdanderson): Refactor into common row layout code.
   // TODO(tdanderson|jdufault): Add material design ripple effects to the menu
@@ skipping 210 matching lines @@
   } else {
     UpdateIconVisibility();
   }
 }
 
 void PaletteTray::UpdateIconVisibility() {
   SetVisible(is_palette_enabled_ && IsInUserSession());
 }
 
 }  // namespace ash