Remove blur from CrOS alt-tab shield

ash/common/wm/window_cycle_list.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 "ash/common/wm/window_cycle_list.h"
 
 #include <list>
 #include <map>
 
 #include "ash/common/shell_window_ids.h"
@@ skipping 236 matching lines @@
 class WindowCycleView : public views::WidgetDelegateView {
  public:
   WindowCycleView(const WindowCycleList::WindowList& windows,
                   WindowCycleController::Direction initial_direction)
       : initial_direction_(initial_direction),
         mirror_container_(new views::View()),
         highlight_view_(new views::View()),
         target_window_(nullptr) {
     DCHECK(!windows.empty());
     SetPaintToLayer(true);
-    layer()->SetBackgroundBlur(4);
     layer()->SetFillsBoundsOpaquely(false);
     layer()->SetMasksToBounds(true);
     layer()->SetOpacity(0.0);
     {
       ui::ScopedLayerAnimationSettings animate_fade(layer()->GetAnimator());
       animate_fade.SetTransitionDuration(
           base::TimeDelta::FromMilliseconds(100));
       layer()->SetOpacity(1.0);
     }
 
     set_background(views::Background::CreateSolidBackground(
-        SkColorSetA(SK_ColorBLACK, 0xCC)));
+        SkColorSetA(SK_ColorBLACK, 0xE6)));
 
     const int kInsideBorderPaddingDip = 64;
     const int kBetweenChildPaddingDip = 10;
     views::BoxLayout* layout = new views::BoxLayout(
         views::BoxLayout::kHorizontal, kInsideBorderPaddingDip,
         kInsideBorderPaddingDip, kBetweenChildPaddingDip);
     layout->set_cross_axis_alignment(
         views::BoxLayout::CROSS_AXIS_ALIGNMENT_START);
     mirror_container_->SetLayoutManager(layout);
     mirror_container_->SetPaintToLayer(true);
@@ skipping 341 matching lines @@
   widget_rect.set_y((widget_rect.height() - widget_height) / 2);
   widget_rect.set_height(widget_height);
   widget->SetBounds(widget_rect);
   widget->Show();
   widget->SetCapture(cycle_view_);
   widget->set_auto_release_capture(false);
   cycle_ui_widget_ = widget;
 }
 
 }  // namespace ash