Revert 144807 - Rewrite DownloadsApiTest in C++.

chrome/browser/extensions/api/downloads/downloads_api.h

Index: chrome/browser/extensions/api/downloads/downloads_api.h
===================================================================
--- chrome/browser/extensions/api/downloads/downloads_api.h	(revision 144812)
+++ chrome/browser/extensions/api/downloads/downloads_api.h	(working copy)
@@ -42,7 +42,7 @@
 extern const char kInvalidOrderByError[];
 extern const char kInvalidQueryLimit[];
 extern const char kInvalidStateError[];
-extern const char kInvalidURLError[];
+extern const char kInvalidUrlError[];
 extern const char kNotImplementedError[];
 
 }  // namespace download_extension_errors
@@ -350,8 +350,7 @@
 class ExtensionDownloadsEventRouter : public content::DownloadManager::Observer,
                                       public content::DownloadItem::Observer {
  public:
-  explicit ExtensionDownloadsEventRouter(
-      Profile* profile, content::DownloadManager* manager);
+  explicit ExtensionDownloadsEventRouter(Profile* profile);
   virtual ~ExtensionDownloadsEventRouter();
 
   virtual void ModelChanged(content::DownloadManager* manager) OVERRIDE;
@@ -359,12 +358,6 @@
   virtual void OnDownloadUpdated(content::DownloadItem* download) OVERRIDE;
   virtual void OnDownloadOpened(content::DownloadItem* download) OVERRIDE;
 
-  // Used for testing.
-  struct DownloadsNotificationSource {
-    std::string event_name;
-    Profile* profile;
-  };
-
  private:
   struct OnChangedStat {
     OnChangedStat();
@@ -377,6 +370,7 @@
   typedef std::map<int, base::DictionaryValue*> ItemJsonMap;
   typedef std::map<int, OnChangedStat*> OnChangedStatMap;
 
+  void Init(content::DownloadManager* manager);
   void DispatchEvent(const char* event_name, base::Value* json_arg);
 
   Profile* profile_;