Rewrite DownloadsApiTest in C++.

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

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_API_DOWNLOADS_DOWNLOADS_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_DOWNLOADS_DOWNLOADS_API_H_
 #pragma once
 
 #include <map>
 #include <set>
@@ skipping 24 matching lines @@
 
 // Errors that can be returned through chrome.extension.lastError.message.
 extern const char kGenericError[];
 extern const char kIconNotFoundError[];
 extern const char kInvalidDangerTypeError[];
 extern const char kInvalidFilterError[];
 extern const char kInvalidOperationError[];
 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
 
 class DownloadsFunctionInterface {
  public:
   enum DownloadsFunctionName {
     DOWNLOADS_FUNCTION_DOWNLOAD = 0,
     DOWNLOADS_FUNCTION_SEARCH = 1,
     DOWNLOADS_FUNCTION_PAUSE = 2,
@@ skipping 287 matching lines @@
   int icon_size_;
   scoped_ptr<DownloadFileIconExtractor> icon_extractor_;
   DISALLOW_COPY_AND_ASSIGN(DownloadsGetFileIconFunction);
 };
 
 // Observes a single DownloadManager and many DownloadItems and dispatches
 // onCreated and onErased events.
 class ExtensionDownloadsEventRouter : public content::DownloadManager::Observer,
                                       public content::DownloadItem::Observer {
  public:
-  explicit ExtensionDownloadsEventRouter(Profile* profile);
+  explicit ExtensionDownloadsEventRouter(
+      Profile* profile, content::DownloadManager* manager);
   virtual ~ExtensionDownloadsEventRouter();
 
   virtual void ModelChanged(content::DownloadManager* manager) OVERRIDE;
   virtual void ManagerGoingDown(content::DownloadManager* manager) OVERRIDE;
   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();
     ~OnChangedStat();
     int fires;
     int total;
   };
 
   typedef std::map<int, content::DownloadItem*> ItemMap;
   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_;
   content::DownloadManager* manager_;
   ItemMap downloads_;
   ItemJsonMap item_jsons_;
   OnChangedStatMap on_changed_stats_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionDownloadsEventRouter);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_DOWNLOADS_DOWNLOADS_API_H_