Fixed the colour and layout logic of the App Info dialog heading

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(0xFB, 0xFB, 0xFB);
 const SkColor kContentsSwitcherBackgroundColor = SK_ColorWHITE;
 const SkColor kSearchBoxBackground = SK_ColorWHITE;
 const SkColor kTopSeparatorColor = SkColorSetRGB(0xE5, 0xE5, 0xE5);
 const SkColor kBottomSeparatorColor = SkColorSetRGB(0xE5, 0xE5, 0xE5);
 
 // The color of the separator used inside dialogs in the app list.
 const SkColor kDialogSeparatorColor = SkColorSetRGB(0xD1, 0xD1, 0xD1);
+const SkColor kDialogSubtitleColor = SkColorSetRGB(0x77, 0x77, 0x77);
 
 // 6% black over kContentsBackgroundColor
 const SkColor kHighlightedColor = SkColorSetRGB(0xE6, 0xE6, 0xE6);
 // 10% black over kContentsBackgroundColor
 const SkColor kSelectedColor = SkColorSetRGB(0xF1, 0xF1, 0xF1);
 
 const SkColor kPagerHoverColor = SkColorSetRGB(0xB4, 0xB4, 0xB4);
 const SkColor kPagerNormalColor = SkColorSetRGB(0xE2, 0xE2, 0xE2);
 const SkColor kPagerSelectedColor = SkColorSetRGB(0x46, 0x8F, 0xFC);
 
@@ skipping 59 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