Extracted inner class doing process dispatch.

chrome/browser/web_resource/promo_resource_service.h

Index: chrome/browser/web_resource/promo_resource_service.h
diff --git a/chrome/browser/web_resource/promo_resource_service.h b/chrome/browser/web_resource/promo_resource_service.h
index 8812cdb6d6d85743414335ea544cbd083decce1a..17bc19d251884a1067abbfc4bd4f3bd9d3b8dc7b 100644
--- a/chrome/browser/web_resource/promo_resource_service.h
+++ b/chrome/browser/web_resource/promo_resource_service.h
@@ -34,6 +34,10 @@ class PromoResourceService : public WebResourceService {
 
   explicit PromoResourceService(Profile* profile);
 
+  // JSONAsynchronousUnpackerDelegate methods.
+  virtual void OnUnpackFinished(const DictionaryValue& parsed_json) OVERRIDE;
+  virtual void OnUnpackError(const std::string& error_message) OVERRIDE;
+
  private:
   virtual ~PromoResourceService();
 
@@ -61,8 +65,8 @@ class PromoResourceService : public WebResourceService {
   // Notify listeners that the state of a web resource has changed.
   void PromoResourceStateChange();
 
-  // WebResourceService override.
-  virtual void Unpack(const base::DictionaryValue& parsed_json) OVERRIDE;
+  // Internal method to process the parsed information.
+  void Unpack(const base::DictionaryValue& parsed_json);
 
   // The profile this service belongs to.
   Profile* profile_;