Apply new WM shadows to app list.

ui/app_list/views/app_list_background.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 "ui/app_list/views/app_list_background.h"
-
-#include "base/command_line.h"
-#include "third_party/skia/include/core/SkPaint.h"
-#include "third_party/skia/include/core/SkPath.h"
-#include "ui/app_list/app_list_constants.h"
-#include "ui/app_list/app_list_switches.h"
-#include "ui/app_list/views/contents_view.h"
-#include "ui/app_list/views/search_box_view.h"
-#include "ui/gfx/canvas.h"
-#include "ui/gfx/geometry/rect.h"
-#include "ui/gfx/skia_util.h"
-#include "ui/views/view.h"
-
-namespace app_list {
-
-AppListBackground::AppListBackground(int corner_radius)
-    : corner_radius_(corner_radius) {
-}
-
-AppListBackground::~AppListBackground() {
-}
-
-void AppListBackground::Paint(gfx::Canvas* canvas,
-                              views::View* view) const {
-  gfx::Rect bounds = view->GetContentsBounds();
-
-  if (corner_radius_ > 0) {
-    canvas->Save();
-    SkPath path;
-    // Contents corner radius is 1px smaller than border corner radius.
-    SkScalar radius = SkIntToScalar(corner_radius_ - 1);
-    path.addRoundRect(gfx::RectToSkRect(bounds), radius, radius);
-    canvas->ClipPath(path, false);
-  }
-
-  SkPaint paint;
-  paint.setStyle(SkPaint::kFill_Style);
-
-  int contents_top = bounds.y();
-  gfx::Rect contents_rect(bounds.x(),
-                          contents_top,
-                          bounds.width(),
-                          bounds.bottom() - contents_top);
-
-  paint.setColor(kContentsBackgroundColor);
-  canvas->DrawRect(contents_rect, paint);
-
-  if (corner_radius_ > 0)
-    canvas->Restore();
-}
-
-}  // namespace app_list