Track CTR of uncommon download warning.

content/public/test/download_test_observer.h

Index: content/public/test/download_test_observer.h
diff --git a/content/public/test/download_test_observer.h b/content/public/test/download_test_observer.h
index c7e209588dd7dcfeb3a034d2794252289bf611cb..42e018e092152d55c701f863551233d1801b2b78 100644
--- a/content/public/test/download_test_observer.h
+++ b/content/public/test/download_test_observer.h
@@ -97,6 +97,12 @@ class DownloadTestObserver : public DownloadManager::Observer,
 
   size_t NumDownloadsSeenInState(DownloadItem::DownloadState state) const;
 
+  DownloadManager* download_manager();
+
+  DangerousDownloadAction dangerous_download_action();
+
+  std::set<uint32_t>& dangerous_downloads_seen();
+
  protected:
   // Only to be called by derived classes' constructors.
   virtual void Init();
@@ -104,18 +110,18 @@ class DownloadTestObserver : public DownloadManager::Observer,
   // Called to see if a download item is in a final state.
   virtual bool IsDownloadInFinalState(DownloadItem* download) = 0;
 
- private:
-  typedef std::set<DownloadItem*> DownloadSet;
-
-  // Maps states to the number of times they have been encountered
-  typedef std::map<DownloadItem::DownloadState, size_t> StateMap;
-
   // Called when we know that a download item is in a final state.
   // Note that this is not the same as it first transitioning in to the
   // final state; multiple notifications may occur once the item is in
   // that state.  So we keep our own track of transitions into final.
   void DownloadInFinalState(DownloadItem* download);
 
+ private:
+  typedef std::set<DownloadItem*> DownloadSet;
+
+  // Maps states to the number of times they have been encountered
+  typedef std::map<DownloadItem::DownloadState, size_t> StateMap;
+
   void SignalIfFinished();
 
   // Fake user click on "Accept".
@@ -182,7 +188,7 @@ class DownloadTestObserverTerminal : public DownloadTestObserver {
 
   ~DownloadTestObserverTerminal() override;
 
- private:
+ protected:
   bool IsDownloadInFinalState(DownloadItem* download) override;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadTestObserverTerminal);