Add a card background to the app list search result groups.

ui/app_list/app_list_constants.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/app_list_constants.h"
 
 namespace app_list {
 
 const SkColor kContentsBackgroundColor = SkColorSetRGB(0xF5, 0xF5, 0xF5);
 const SkColor kSearchBoxBackground = SK_ColorWHITE;
@@ skipping 32 matching lines @@
 const SkColor kFolderTitleColor = SkColorSetRGB(0x33, 0x33, 0x33);
 const SkColor kFolderTitleHintTextColor = SkColorSetRGB(0xA0, 0xA0, 0xA0);
 // Color of the folder ink bubble.
 const SkColor kFolderBubbleColor = SK_ColorWHITE;
 // Color of the folder bubble shadow.
 const SkColor kFolderShadowColor = SkColorSetRGB(0xBF, 0xBF, 0xBF);
 const float kFolderBubbleRadius = 22;
 const float kFolderShadowRadius = 22.5;
 const float kFolderShadowOffsetY = 1;
 
+const int kCardShadowBlur = 4;
+const int kCardShadowYOffset = 1;
+const SkColor kCardShadowColor = SkColorSetARGB(0x4C, 0, 0, 0);
+const SkColor kCardBackgroundColor = SK_ColorWHITE;
+
 // Duration in milliseconds for page transition.
 const int kPageTransitionDurationInMs = 180;
 
 // Duration in milliseconds for over scroll page transition.
 const int kOverscrollPageTransitionDurationMs = 50;
 
 // Duration in milliseconds for fading in the target page when opening
 // or closing a folder, and the duration for the top folder icon animation
 // for flying in or out the folder.
 const int kFolderTransitionInDurationMs = 400;
@@ skipping 49 matching lines @@
 
 #if defined(OS_LINUX)
 #if defined(GOOGLE_CHROME_BUILD)
 const char kAppListWMClass[] = "chrome_app_list";
 #else  // CHROMIUM_BUILD
 const char kAppListWMClass[] = "chromium_app_list";
 #endif
 #endif
 
 }  // namespace app_list