Add browsertest for the feedback service

chrome/browser/download/download_test_file_activity_observer.h

Index: chrome/browser/download/download_test_file_activity_observer.h
diff --git a/chrome/browser/download/download_test_file_activity_observer.h b/chrome/browser/download/download_test_file_activity_observer.h
index 28e07d8551188b37129a8b0090e3f6e239ba7f75..051dd052b2d773a241318f586d6a2f19de372041 100644
--- a/chrome/browser/download/download_test_file_activity_observer.h
+++ b/chrome/browser/download/download_test_file_activity_observer.h
@@ -6,6 +6,7 @@
 #define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_TEST_FILE_ACTIVITY_OBSERVER_H_
 
 #include "base/memory/weak_ptr.h"
+#include "content/public/browser/download_danger_type.h"
 
 class Profile;
 
@@ -31,6 +32,10 @@ class DownloadTestFileActivityObserver {
   // this method was called.
   bool TestAndResetDidShowFileChooser();
 
+  // Will set the danger type to UNCOMMON if the download is marked
+  // DANGEROUS_FILE.
+  void ChangeDangerTypeForFeedbackTest();
+
  private:
   class MockDownloadManagerDelegate;