Initial skeleton for System Indicator API

chrome/browser/extensions/event_names.cc

Index: chrome/browser/extensions/event_names.cc
diff --git a/chrome/browser/extensions/event_names.cc b/chrome/browser/extensions/event_names.cc
index 93aa3ea1b85486f62bb7b47bf59b494f95be084c..e71b887192ff32202ff11a32d2acc7616b75f20d 100644
--- a/chrome/browser/extensions/event_names.cc
+++ b/chrome/browser/extensions/event_names.cc
@@ -72,10 +72,12 @@ const char kOnPushMessage[] = "pushMessaging.onMessage";
 
 const char kOnCpuUpdated[] = "experimental.systemInfo.cpu.onUpdated";
 const char kOnStorageAvailableCapacityChanged[] =
-     "experimental.systemInfo.storage.onAvailableCapacityChanged";
+    "experimental.systemInfo.storage.onAvailableCapacityChanged";
 const char kOnStorageAdded[] = "experimental.systemInfo.storage.onAdded";
 const char kOnStorageRemoved[] = "experimental.systemInfo.storage.onRemoved";
 
+const char kOnSystemIndicatorClicked[] = "systemIndicator.onClicked";
+
 }  // namespace event_names
 
 }  // namespace extensions