Override mechanism for features.gypi

build/features_override.gypi

+# 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.
+
+# This file is only included in full-chromium builds, and overrides the
+# feature_defines variable in third_party/WebKit/WebKit/chromium/features.gypi.
+{
+  'variables': {
+    # WARNING: This list of strings completely replaces the list in
+    # features.gypi. Therefore, if an enable is listed in features.gypi
+    # but not listed below, it will revert to its hardcoded webkit value.
+    'feature_defines': [
+      'ENABLE_3D_CANVAS=0',
+      '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_ORIENTATION_EVENTS=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',
+      'ENABLE_WORKERS=1',
+    ],
+    # TODO: If the need arises, create a mechanism that will intelligently
+    # merge the lists rather than replace one with the other. This may
+    # require changes in gyp.
+  },
+}