PerformanceMonitor: UMA alert for high browser CPU usage.

chrome/browser/performance_monitor/event.h

Index: chrome/browser/performance_monitor/event.h
diff --git a/chrome/browser/performance_monitor/event.h b/chrome/browser/performance_monitor/event.h
index b7666b49a52398ec568083c223196bdf81f62852..4bde2598ea507b8416f44818ecad765dce77d113 100644
--- a/chrome/browser/performance_monitor/event.h
+++ b/chrome/browser/performance_monitor/event.h
@@ -9,39 +9,9 @@
 #include "base/time/time.h"
 #include "base/values.h"
 
-namespace performance_monitor {
-
-// IMPORTANT: To add new events, please
-// - Place the new event above EVENT_NUMBER_OF_EVENTS.
-// - Add a member to the EventKeyChar enum in key_builder.cc.
-// - Add the appropriate messages in generated_resources.grd.
-// - Add the appropriate functions in
-//   chrome/browser/ui/webui/performance_monitor/performance_monitor_l10n.h.
-enum EventType {
-  EVENT_UNDEFINED,
-
-  // Extension-Related events
-  EVENT_EXTENSION_INSTALL,
-  EVENT_EXTENSION_UNINSTALL,
-  EVENT_EXTENSION_UPDATE,
-  EVENT_EXTENSION_ENABLE,
-  EVENT_EXTENSION_DISABLE,
-
-  // Chrome's version has changed.
-  EVENT_CHROME_UPDATE,
+#include "chrome/browser/performance_monitor/event_type.h"
 
-  // Renderer-Failure related events; these correspond to the RENDERER_HANG
-  // event, and the two termination statuses ABNORMAL_EXIT and PROCESS_KILLED,
-  // respectively.
-  EVENT_RENDERER_HANG,
-  EVENT_RENDERER_CRASH,
-  EVENT_RENDERER_KILLED,
-
-  // Chrome did not shut down correctly.
-  EVENT_UNCLEAN_EXIT,
-
-  EVENT_NUMBER_OF_EVENTS
-};
+namespace performance_monitor {
 
 const char* EventTypeToString(EventType event_type);