RefCounted types should not have public destructors, chrome/browser/extensions

chrome/browser/extensions/api/web_request/web_request_api_helpers.cc

Index: chrome/browser/extensions/api/web_request/web_request_api_helpers.cc
diff --git a/chrome/browser/extensions/api/web_request/web_request_api_helpers.cc b/chrome/browser/extensions/api/web_request/web_request_api_helpers.cc
index 60b3807f492588609d74592d4795f931f21ccf0c..871f29aeb4a517602ce967d6f2c76f434fd9d286 100644
--- a/chrome/browser/extensions/api/web_request/web_request_api_helpers.cc
+++ b/chrome/browser/extensions/api/web_request/web_request_api_helpers.cc
@@ -78,7 +78,6 @@ class NetLogExtensionIdParameter : public net::NetLog::EventParameters {
  public:
   explicit NetLogExtensionIdParameter(const std::string& extension_id)
       : extension_id_(extension_id) {}
-  virtual ~NetLogExtensionIdParameter() {}
 
   virtual base::Value* ToValue() const OVERRIDE {
     DictionaryValue* dict = new DictionaryValue();
@@ -86,6 +85,9 @@ class NetLogExtensionIdParameter : public net::NetLog::EventParameters {
     return dict;
   }
 
+ protected:
+  virtual ~NetLogExtensionIdParameter() {}
+
  private:
   const std::string extension_id_;
 
@@ -98,7 +100,6 @@ class NetLogModificationParameter : public NetLogExtensionIdParameter {
  public:
   explicit NetLogModificationParameter(const std::string& extension_id)
       : NetLogExtensionIdParameter(extension_id) {}
-  virtual ~NetLogModificationParameter() {}
 
   virtual base::Value* ToValue() const OVERRIDE {
     Value* parent = NetLogExtensionIdParameter::ToValue();
@@ -118,6 +119,8 @@ class NetLogModificationParameter : public NetLogExtensionIdParameter {
   }
 
  private:
+  virtual ~NetLogModificationParameter() {}
+
   ListValue modified_headers_;
   ListValue deleted_headers_;