Add notifications include directory and compile flag...

webkit/webkit.gyp

 # Copyright (c) 2009 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.
 
 {
   'variables': {
     'feature_defines': [
       'ENABLE_CHANNEL_MESSAGING=1',
       'ENABLE_DATABASE=1',
       'ENABLE_DATAGRID=0',
       'ENABLE_OFFLINE_WEB_APPLICATIONS=1',
       'ENABLE_DASHBOARD_SUPPORT=0',
       'ENABLE_DOM_STORAGE=1',
       'ENABLE_JAVASCRIPT_DEBUGGER=0',
       'ENABLE_JSC_MULTIPLE_THREADS=0',
       'ENABLE_ICONDATABASE=0',
+      'ENABLE_NOTIFICATIONS=0',
       'ENABLE_XSLT=1',
       'ENABLE_XPATH=1',
       'ENABLE_SHARED_WORKERS=0',
       'ENABLE_SVG=1',
       'ENABLE_SVG_ANIMATION=1',
       'ENABLE_SVG_AS_IMAGE=1',
       'ENABLE_SVG_USE=1',
       'ENABLE_SVG_FOREIGN_OBJECT=1',
       'ENABLE_SVG_FONTS=1',
       'ENABLE_VIDEO=1',
@@ skipping 15 matching lines @@
       '../third_party/WebKit/WebCore/dom/default',
       '../third_party/WebKit/WebCore/editing',
       '../third_party/WebKit/WebCore/history',
       '../third_party/WebKit/WebCore/html',
       '../third_party/WebKit/WebCore/html/canvas',
       '../third_party/WebKit/WebCore/inspector',
       '../third_party/WebKit/WebCore/loader',
       '../third_party/WebKit/WebCore/loader/appcache',
       '../third_party/WebKit/WebCore/loader/archive',
       '../third_party/WebKit/WebCore/loader/icon',
+      '../third_party/WebKit/WebCore/notifications',
       '../third_party/WebKit/WebCore/page',
       '../third_party/WebKit/WebCore/page/animation',
       '../third_party/WebKit/WebCore/page/chromium',
       '../third_party/WebKit/WebCore/platform',
       '../third_party/WebKit/WebCore/platform/animation',
       '../third_party/WebKit/WebCore/platform/chromium',
       '../third_party/WebKit/WebCore/platform/graphics',
       '../third_party/WebKit/WebCore/platform/graphics/chromium',
       '../third_party/WebKit/WebCore/platform/graphics/opentype',
       '../third_party/WebKit/WebCore/platform/graphics/skia',
@@ skipping 1493 matching lines @@
           'files': [
 
             '<@(webinspector_image_files)',
 
           ],
         },
       ],
     },
   ],
 }