Add extension event histogram values for messaging, webRequest, and webview.

extensions/browser/extension_event_histogram_value.h

Index: extensions/browser/extension_event_histogram_value.h
diff --git a/extensions/browser/extension_event_histogram_value.h b/extensions/browser/extension_event_histogram_value.h
index 92054c0919a6258e56120ecff0928a630315c446..03bd28c0ab907ebd70024f74d00c5d12999cc745 100644
--- a/extensions/browser/extension_event_histogram_value.h
+++ b/extensions/browser/extension_event_histogram_value.h
@@ -362,8 +362,39 @@ enum HistogramValue {
   SCREENLOCK_PRIVATE_ON_AUTH_ATTEMPTED,
   TYPES_CHROME_SETTING_ON_CHANGE,
   TYPES_PRIVATE_CHROME_DIRECT_SETTING_ON_CHANGE,
-  WEB_VIEW_INTERNAL_ON_MESSAGE,  // TODO(kalman): where are the rest of the
-                                 // webview events?
+  WEB_VIEW_INTERNAL_ON_MESSAGE,
+  EXTENSION_VIEW_INTERNAL_ON_LOAD_COMMIT,
+  RUNTIME_ON_REQUEST,
+  RUNTIME_ON_REQUEST_EXTERNAL,
+  CHROME_WEB_VIEW_INTERNAL_ON_CONTEXT_MENU_SHOW,
+  WEB_VIEW_INTERNAL_ON_BEFORE_REQUEST,
+  WEB_VIEW_INTERNAL_ON_BEFORE_SEND_HEADERS,
+  WEB_VIEW_INTERNAL_ON_CLOSE,
+  WEB_VIEW_INTERNAL_ON_COMPLETED,
+  WEB_VIEW_INTERNAL_ON_CONSOLE_MESSAGE,
+  WEB_VIEW_INTERNAL_ON_CONTENT_LOAD,
+  WEB_VIEW_INTERNAL_ON_DIALOG,
+  WEB_VIEW_INTERNAL_ON_DROP_LINK,
+  WEB_VIEW_INTERNAL_ON_EXIT,
+  WEB_VIEW_INTERNAL_ON_EXIT_FULLSCREEN,
+  WEB_VIEW_INTERNAL_ON_FIND_REPLY,
+  WEB_VIEW_INTERNAL_ON_FRAME_NAME_CHANGED,
+  WEB_VIEW_INTERNAL_ON_HEADERS_RECEIVED,
+  WEB_VIEW_INTERNAL_ON_LOAD_ABORT,
+  WEB_VIEW_INTERNAL_ON_LOAD_COMMIT,
+  WEB_VIEW_INTERNAL_ON_LOAD_PROGRESS,
+  WEB_VIEW_INTERNAL_ON_LOAD_REDIRECT,
+  WEB_VIEW_INTERNAL_ON_LOAD_START,
+  WEB_VIEW_INTERNAL_ON_LOAD_STOP,
+  WEB_VIEW_INTERNAL_ON_NEW_WINDOW,
+  WEB_VIEW_INTERNAL_ON_PERMISSION_REQUEST,
+  WEB_VIEW_INTERNAL_ON_RESPONSE_STARTED,
+  WEB_VIEW_INTERNAL_ON_RESPONSIVE,
+  WEB_VIEW_INTERNAL_ON_SIZE_CHANGED,
+  WEB_VIEW_INTERNAL_ON_UNRESPONSIVE,
+  WEB_VIEW_INTERNAL_ON_ZOOM_CHANGE,
+  GUEST_VIEW_INTERNAL_ON_RESIZE,
+
   // Last entry: Add new entries above, then run:
   // python tools/metrics/histograms/update_extension_histograms.py
   ENUM_BOUNDARY