Add browser test for notification action icons.

content/public/common/content_switches.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 "build/build_config.h"
 #include "content/public/common/content_switches.h"
 
 namespace switches {
 
 // The number of MSAA samples for canvas2D. Requires MSAA support by GPU to
@@ skipping 385 matching lines @@
 const char kEnableMojoShellConnection[] = "enable-mojo-shell-connection";
 
 // Enables the network information API.
 const char kEnableNetworkInformation[]      = "enable-network-information";
 
 // Enables non-validating reload on reload-to-refresh-content (e.g. pull-
 // to-refresh).
 const char kEnableNonValidatingReloadOnRefreshContent[] =
     "enable-non-validating-reload-on-refresh-content";
 
+// Enables action button icons for the Web Notification API.
+const char kEnableNotificationActionIcons[] =
+    "enable-notification-action-icons";
+
 // Enables partial raster. Enabling this switch also enables the use of
 // persistent gpu memory buffers.
 const char kEnablePartialRaster[] = "enable-partial-raster";
 
 // Enables compositor-accelerated touch-screen pinch gestures.
 const char kEnablePinch[]                   = "enable-pinch";
 
 // Enables testing features of the Plugin Placeholder. For internal use only.
 const char kEnablePluginPlaceholderTesting[] =
     "enable-plugin-placeholder-testing";
@@ skipping 628 matching lines @@
 const char kMemoryPressureThresholdsMb[] = "memory-pressure-thresholds-mb";
 
 // Enables the exporting of the tracing events to ETW. This is only supported on
 // Windows Vista and later.
 const char kTraceExportEventsToETW[] = "trace-export-events-to-etw";
 #endif
 
 // Don't dump stuff here, follow the same order as the header.
 
 }  // namespace switches