Final batch adding real histogram values for extension events.

chrome/browser/extensions/api/system_private/system_private_api.cc

Index: chrome/browser/extensions/api/system_private/system_private_api.cc
diff --git a/chrome/browser/extensions/api/system_private/system_private_api.cc b/chrome/browser/extensions/api/system_private/system_private_api.cc
index 54048c15a660f8de208a1f516b8fc7cd0b7b9a43..d98ab2e0e500f43acda4e221fbd245d8e1a14dd8 100644
--- a/chrome/browser/extensions/api/system_private/system_private_api.cc
+++ b/chrome/browser/extensions/api/system_private/system_private_api.cc
@@ -47,13 +47,16 @@ const char kUpdatingState[] = "Updating";
 #endif  // defined(OS_CHROMEOS)
 
 // Dispatches an extension event with |argument|
-void DispatchEvent(const std::string& event_name, base::Value* argument) {
+void DispatchEvent(extensions::events::HistogramValue histogram_value,
+                   const std::string& event_name,
+                   base::Value* argument) {
   scoped_ptr<base::ListValue> list_args(new base::ListValue());
   if (argument) {
     list_args->Append(argument);
   }
-  g_browser_process->extension_event_router_forwarder()->
-      BroadcastEventToRenderers(event_name, list_args.Pass(), GURL());
+  g_browser_process->extension_event_router_forwarder()
+      ->BroadcastEventToRenderers(histogram_value, event_name, list_args.Pass(),
+                                  GURL());
 }
 
 }  // namespace
@@ -143,22 +146,26 @@ void DispatchVolumeChangedEvent(double volume, bool is_volume_muted) {
   base::DictionaryValue* dict = new base::DictionaryValue();
   dict->SetDouble(kVolumeKey, volume);
   dict->SetBoolean(kIsVolumeMutedKey, is_volume_muted);
-  DispatchEvent(system_private::OnVolumeChanged::kEventName, dict);
+  DispatchEvent(extensions::events::SYSTEM_PRIVATE_ON_VOLUME_CHANGED,
+                system_private::OnVolumeChanged::kEventName, dict);
 }
 
 void DispatchBrightnessChangedEvent(int brightness, bool user_initiated) {
   base::DictionaryValue* dict = new base::DictionaryValue();
   dict->SetInteger(kBrightnessKey, brightness);
   dict->SetBoolean(kUserInitiatedKey, user_initiated);
-  DispatchEvent(system_private::OnBrightnessChanged::kEventName, dict);
+  DispatchEvent(extensions::events::SYSTEM_PRIVATE_ON_BRIGHTNESS_CHANGED,
+                system_private::OnBrightnessChanged::kEventName, dict);
 }
 
 void DispatchScreenUnlockedEvent() {
-  DispatchEvent(system_private::OnScreenUnlocked::kEventName, NULL);
+  DispatchEvent(extensions::events::SYSTEM_PRIVATE_ON_SCREEN_UNLOCKED,
+                system_private::OnScreenUnlocked::kEventName, NULL);
 }
 
 void DispatchWokeUpEvent() {
-  DispatchEvent(system_private::OnWokeUp::kEventName, NULL);
+  DispatchEvent(extensions::events::SYSTEM_PRIVATE_ON_WOKE_UP,
+                system_private::OnWokeUp::kEventName, NULL);
 }
 
 }  // namespace extensions