Experience sampling insturmentation for SSL and Safe Browsing interstitials

chrome/browser/safe_browsing/safe_browsing_blocking_page.h

Index: chrome/browser/safe_browsing/safe_browsing_blocking_page.h
diff --git a/chrome/browser/safe_browsing/safe_browsing_blocking_page.h b/chrome/browser/safe_browsing/safe_browsing_blocking_page.h
index 8eaa9ba8a8268d03469093f8c808b55cb0d5db58..307fa202503c2ed8af2fa23c13f6b97dce1b42f5 100644
--- a/chrome/browser/safe_browsing/safe_browsing_blocking_page.h
+++ b/chrome/browser/safe_browsing/safe_browsing_blocking_page.h
@@ -53,6 +53,12 @@ class InterstitialPage;
 class WebContents;
 }
 
+#if defined(ENABLE_EXTENSIONS)
+namespace extensions {
+class ExperienceSamplingEvent;
+}
+#endif
+
 class SafeBrowsingBlockingPage : public content::InterstitialPageDelegate {
  public:
   typedef SafeBrowsingUIManager::UnsafeResource UnsafeResource;
@@ -233,6 +239,11 @@ class SafeBrowsingBlockingPage : public content::InterstitialPageDelegate {
   int num_visits_;
   base::CancelableTaskTracker request_tracker_;
 
+ private:
+#if defined(ENABLE_EXTENSIONS)
+  scoped_ptr<extensions::ExperienceSamplingEvent> sampling_event_;
+#endif
+
   DISALLOW_COPY_AND_ASSIGN(SafeBrowsingBlockingPage);
 };