Experience sampling instrumentation for dangerous downloads warnings

chrome/browser/ui/cocoa/download/download_item_controller.h

Index: chrome/browser/ui/cocoa/download/download_item_controller.h
diff --git a/chrome/browser/ui/cocoa/download/download_item_controller.h b/chrome/browser/ui/cocoa/download/download_item_controller.h
index 78010b6be04b3c4056ba92fcfbb2039ce396ba65..e6dcff1079da4a3953765d487619eab62e076236 100644
--- a/chrome/browser/ui/cocoa/download/download_item_controller.h
+++ b/chrome/browser/ui/cocoa/download/download_item_controller.h
@@ -21,6 +21,10 @@ class DownloadItem;
 class PageNavigator;
 }
 
+namespace extensions {
+class ExperienceSamplingEvent;
+}
+
 namespace gfx {
 class FontList;
 }
@@ -71,6 +75,9 @@ class MenuModel;
     kNormal,
     kDangerous
   } state_;
+
+  // ExperienceSampling: Track the state of dangerous downloads warnings.
+  scoped_ptr<extensions::ExperienceSamplingEvent> sampling_event_;
 };
 
 // Initialize controller for |downloadItem|.