Update WM shadows for MD.

chrome/browser/ui/views/frame/browser_header_painter_ash.cc

 // Copyright 2014 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 "chrome/browser/ui/views/frame/browser_header_painter_ash.h"
 
 #include "ash/common/ash_layout_constants.h"
 #include "ash/common/frame/caption_buttons/frame_caption_button_container_view.h"
 #include "ash/common/frame/header_painter_util.h"
 #include "base/logging.h"  // DCHECK
@@ skipping 238 matching lines @@
 
 void BrowserHeaderPainterAsh::PaintFrameImages(gfx::Canvas* canvas,
                                                bool active) {
   int alpha = activation_animation_->CurrentValueBetween(0, 0xFF);
   if (!active)
     alpha = 0xFF - alpha;
 
   if (alpha == 0)
     return;
 
-  int corner_radius =
-      (frame_->IsMaximized() || frame_->IsFullscreen())
-          ? 0
-          : ash::HeaderPainterUtil::GetTopCornerRadiusWhenRestored();
-
+  bool round_corners = !frame_->IsMaximized() && !frame_->IsFullscreen();
   gfx::ImageSkia frame_image = view_->GetFrameImage(active);
   gfx::ImageSkia frame_overlay_image = view_->GetFrameOverlayImage(active);
 
   SkPaint paint;
   paint.setBlendMode(SkBlendMode::kPlus);
   paint.setAlpha(alpha);
   paint.setColor(SkColorSetA(view_->GetFrameColor(active), alpha));
+  paint.setAntiAlias(round_corners);
   PaintFrameImagesInRoundRect(
       canvas, frame_image, frame_overlay_image, paint, GetPaintedBounds(),
-      corner_radius, ash::HeaderPainterUtil::GetThemeBackgroundXInset());
+      round_corners ? ash::HeaderPainterUtil::GetTopCornerRadiusWhenRestored()
+                    : 0,
+      ash::HeaderPainterUtil::GetThemeBackgroundXInset());
 }
 
 void BrowserHeaderPainterAsh::PaintTitleBar(gfx::Canvas* canvas) {
   // The window icon is painted by its own views::View.
   gfx::Rect title_bounds = GetTitleBounds();
   title_bounds.set_x(view_->GetMirroredXForRect(title_bounds));
   canvas->DrawStringRectWithFlags(frame_->widget_delegate()->GetWindowTitle(),
                                   BrowserFrame::GetTitleFontList(),
                                   is_incognito_ ? kIncognitoWindowTitleTextColor
                                                 : kNormalWindowTitleTextColor,
@@ skipping 29 matching lines @@
 }
 
 gfx::Rect BrowserHeaderPainterAsh::GetPaintedBounds() const {
   return gfx::Rect(view_->width(), painted_height_);
 }
 
 gfx::Rect BrowserHeaderPainterAsh::GetTitleBounds() const {
   return ash::HeaderPainterUtil::GetTitleBounds(window_icon_,
       caption_button_container_, BrowserFrame::GetTitleFontList());
 }