Change the app list folder management back button to a smaller size one.

ui/app_list/views/folder_header_view.cc

 // Copyright (c) 2013 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/folder_header_view.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "grit/ui_resources.h"
 #include "grit/ui_strings.h"
 #include "ui/app_list/app_list_constants.h"
 #include "ui/app_list/app_list_folder_item.h"
 #include "ui/app_list/views/app_list_folder_view.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/canvas.h"
 #include "ui/views/controls/button/image_button.h"
 #include "ui/views/controls/textfield/textfield.h"
 
 namespace app_list {
 
 namespace {
 
 const int kPreferredWidth = 360;
 const int kPreferredHeight = 48;
-const int kIconDimension = 32;
+const int kIconDimension = 24;
 const int kPadding = 14;
 const int kFolderNameWidth = 150;
 const int kFolderNameHeight = 30;
 const int kBottomSeparatorWidth = 380;
 const int kBottomSeparatorHeight = 1;
 
 const SkColor kHintTextColor = SkColorSetRGB(0xA0, 0xA0, 0xA0);
 
 }  // namespace
 
@@ skipping 135 matching lines @@
 }
 
 void FolderHeaderView::ItemIsInstallingChanged() {
 }
 
 void FolderHeaderView::ItemPercentDownloadedChanged() {
 }
 
 }  // namespace app_list