Apply new MD shadows to CrOS tray bubbles.

ash/common/system/tray/tray_background_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_background_view.h"
 
 #include <algorithm>
 
 #include "ash/common/ash_constants.h"
 #include "ash/common/material_design/material_design_controller.h"
@@ skipping 515 matching lines @@
   SchedulePaint();
 }
 
 views::View* TrayBackgroundView::GetBubbleAnchor() const {
   return tray_container_;
 }
 
 gfx::Insets TrayBackgroundView::GetBubbleAnchorInsets() const {
   gfx::Insets anchor_insets = GetBubbleAnchor()->GetInsets();
   gfx::Insets tray_bg_insets = GetInsets();
-  // TODO(estade): for reasons I don't understand, BubbleBorder distances the
-  // bubble by the arrow's "interior" thickness even when the paint type is
-  // PAINT_NONE.
-  const int kBigShadowArrowInteriorThickness = 9;
   if (GetAnchorAlignment() == TrayBubbleView::ANCHOR_ALIGNMENT_BOTTOM) {
-    return gfx::Insets(kBigShadowArrowInteriorThickness - tray_bg_insets.top(),
-                       anchor_insets.left(), -tray_bg_insets.bottom(),
-                       anchor_insets.right());
+    return gfx::Insets(-tray_bg_insets.top(), anchor_insets.left(),
+                       -tray_bg_insets.bottom(), anchor_insets.right());
   } else {
-    return gfx::Insets(
-        anchor_insets.top(),
-        kBigShadowArrowInteriorThickness - tray_bg_insets.left(),
-        anchor_insets.bottom(),
-        kBigShadowArrowInteriorThickness - tray_bg_insets.right());
+    return gfx::Insets(anchor_insets.top(), -tray_bg_insets.left(),
+                       anchor_insets.bottom(), -tray_bg_insets.right());
   }
 }
 
 std::unique_ptr<views::InkDropMask> TrayBackgroundView::CreateInkDropMask()
     const {
   return base::MakeUnique<views::RoundRectInkDropMask>(
       size(), GetBackgroundInsets(), kTrayRoundedBorderRadius);
 }
 
 bool TrayBackgroundView::ShouldEnterPushedState(const ui::Event& event) {
@@ skipping 84 matching lines @@
 }
 
 gfx::Rect TrayBackgroundView::GetBackgroundBounds() const {
   gfx::Insets insets = GetBackgroundInsets();
   gfx::Rect bounds = GetLocalBounds();
   bounds.Inset(insets);
   return bounds;
 }
 
 }  // namespace ash