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 b5ac288a785ff312ccd2202e80151ac0f8b63f72..6de461680a2856936e1d6720b2a9612fd27701bd 100644
--- a/chrome/browser/safe_browsing/safe_browsing_blocking_page.h
+++ b/chrome/browser/safe_browsing/safe_browsing_blocking_page.h
@@ -53,6 +53,10 @@ class InterstitialPage;
 class WebContents;
 }
 
+namespace extensions {
+class SamplingEvent;
+}
+
 class SafeBrowsingBlockingPage : public content::InterstitialPageDelegate {
  public:
   typedef SafeBrowsingUIManager::UnsafeResource UnsafeResource;
@@ -221,6 +225,9 @@ class SafeBrowsingBlockingPage : public content::InterstitialPageDelegate {
   int num_visits_;
   base::CancelableTaskTracker request_tracker_;
 
+ private:
+  scoped_ptr<extensions::SamplingEvent> sampling_event_;
+
   DISALLOW_COPY_AND_ASSIGN(SafeBrowsingBlockingPage);
 };