Add kill switch for Notification images

content/public/common/content_features.cc

 // Copyright 2015 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 "build/build_config.h"
 #include "content/public/common/content_features.h"
 
 namespace features {
 
 // All features in alphabetical order.
@@ skipping 93 matching lines @@
 // unexpected memory regression at this point. Please do not enable this.
 const base::Feature kMemoryCoordinator {
   "MemoryCoordinator", base::FEATURE_DISABLED_BY_DEFAULT
 };
 
 // Non-validating reload for desktop.
 // See https://crbug.com/591245
 const base::Feature kNonValidatingReloadOnNormalReload{
     "NonValidatingReloadOnNormalReload", base::FEATURE_ENABLED_BY_DEFAULT};
 
+// Kill switch for Web Notification content images.
+const base::Feature kNotificationImage{"NotificationImage",

[Peter Beverloo, 2016/11/15 19:39:20]

Again: "Image" will be very ambiguous for readers outside of our team. Please
consider consistently using "BigImage", "ContentImage" or something like.

[johnme, 2016/11/16 00:33:11]

Done (ContentImage).

+                                       base::FEATURE_ENABLED_BY_DEFAULT};
+
 // An experiment to optimize resource loading IPC for small resources.
 // http://crbug.com/580928
 const base::Feature kOptimizeLoadingIPCForSmallResources{
     "OptimizeLoadingIPCForSmallResources",
     base::FEATURE_DISABLED_BY_DEFAULT};
 
 // Origin Trials for controlling access to feature/API experiments.
 const base::Feature kOriginTrials{"OriginTrials",
                                   base::FEATURE_ENABLED_BY_DEFAULT};
 
@@ skipping 130 matching lines @@
 #endif
 
 #if defined(OS_WIN)
 // Emergency "off switch" for new Windows sandbox security mitigation,
 // sandbox::MITIGATION_EXTENSION_POINT_DISABLE.
 const base::Feature kWinSboxDisableExtensionPoints{
     "WinSboxDisableExtensionPoint", base::FEATURE_ENABLED_BY_DEFAULT};
 #endif
 
 }  // namespace features