RefCounted types should not have public destructors, chrome/browser/ part 1

chrome/browser/history/history_browsertest.cc

Index: chrome/browser/history/history_browsertest.cc
diff --git a/chrome/browser/history/history_browsertest.cc b/chrome/browser/history/history_browsertest.cc
index c636af7c9769a22f0640926ff0bd87c9ecdf7f08..2a1b3019beba6b19a4ec780234a3456f632d6d19 100644
--- a/chrome/browser/history/history_browsertest.cc
+++ b/chrome/browser/history/history_browsertest.cc
@@ -35,8 +35,7 @@ namespace {
 // Notifies the main thread after all history backend thread tasks have run.
 class WaitForHistoryTask : public HistoryDBTask {
  public:
-  WaitForHistoryTask() {
-  }
+  WaitForHistoryTask() {}
 
   virtual bool RunOnDBThread(history::HistoryBackend* backend,
                              history::HistoryDatabase* db) {
@@ -48,6 +47,8 @@ class WaitForHistoryTask : public HistoryDBTask {
   }
 
  private:
+  virtual ~WaitForHistoryTask() {}
+
   DISALLOW_COPY_AND_ASSIGN(WaitForHistoryTask);
 };