Add end to end test for Media galleries scan API.

chrome/browser/extensions/api/media_galleries/media_galleries_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.
 
 // Defines the Chrome Extensions Media Galleries API functions for accessing
 // user's media files, as specified in the extension API IDL.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_API_MEDIA_GALLERIES_MEDIA_GALLERIES_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_MEDIA_GALLERIES_MEDIA_GALLERIES_API_H_
 
 #include <string>
 #include <vector>
 
+#include "base/callback_forward.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/extensions/api/profile_keyed_api_factory.h"
 #include "chrome/browser/extensions/chrome_extension_function.h"
 #include "chrome/browser/media_galleries/media_file_system_registry.h"
 #include "chrome/browser/media_galleries/media_scan_manager_observer.h"
 #include "chrome/common/extensions/api/media_galleries.h"
 #include "components/storage_monitor/media_storage_util.h"
 
 namespace MediaGalleries = extensions::api::media_galleries;
 
+class MediaGalleriesScanResultDialogController;
+
+namespace content {
+class WebContents;
+}
+
 namespace extensions {
 
+class Extension;
+
 // The profile-keyed service that manages the media galleries extension API.
 // Created at the same time as the Profile. This is also the event router.
 class MediaGalleriesEventRouter : public ProfileKeyedAPI,
                                   public MediaScanManagerObserver {
  public:
   // BrowserContextKeyedService implementation.
   virtual void Shutdown() OVERRIDE;
 
   // ProfileKeyedAPI implementation.
   static ProfileKeyedAPIFactory<MediaGalleriesEventRouter>*
@@ skipping 161 matching lines @@
 class MediaGalleriesAddScanResultsFunction
     : public ChromeAsyncExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("mediaGalleries.addScanResults",
                              MEDIAGALLERIES_ADDSCANRESULTS)
 
  protected:
   virtual ~MediaGalleriesAddScanResultsFunction();
   virtual bool RunImpl() OVERRIDE;
 
+  // Pulled out for testing.
+  virtual MediaGalleriesScanResultDialogController* MakeDialog(
+      content::WebContents* web_contents,
+      const extensions::Extension& extension,
+      const base::Closure& on_finish);
+
  private:
   // Bottom half for RunImpl, invoked after the preferences is initialized.
   void OnPreferencesInit();
 
   // Grabs galleries from the media file system registry and passes them to
   // ReturnGalleries().
   void GetAndReturnGalleries();
 
   // Returns galleries to the caller.
   void ReturnGalleries(const std::vector<MediaFileSystemInfo>& filesystems);
@@ skipping 12 matching lines @@
   // Bottom half for RunImpl, invoked after the preferences is initialized.
   void OnPreferencesInit(bool mime_type_only, const std::string& blob_uuid);
 
   void SniffMimeType(bool mime_type_only, scoped_ptr<std::string> blob_header,
                      int64 total_blob_length);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_MEDIA_GALLERIES_MEDIA_GALLERIES_API_H_