Media galleries: configuration dialog controller and GTK impl.

chrome/browser/extensions/api/media_galleries/media_galleries_api.h

Index: chrome/browser/extensions/api/media_galleries/media_galleries_api.h
diff --git a/chrome/browser/extensions/api/media_galleries/media_galleries_api.h b/chrome/browser/extensions/api/media_galleries/media_galleries_api.h
index 870673b16d7118e8141461a11743cc456526c1ec..82d6c7c7765ff0f816f884b9fd2d03ee49dd1b5d 100644
--- a/chrome/browser/extensions/api/media_galleries/media_galleries_api.h
+++ b/chrome/browser/extensions/api/media_galleries/media_galleries_api.h
@@ -9,16 +9,26 @@
 #define CHROME_BROWSER_EXTENSIONS_API_MEDIA_GALLERIES_MEDIA_GALLERIES_API_H_
 
 #include "chrome/browser/extensions/extension_function.h"
+#include "chrome/browser/media_gallery/media_galleries_dialog_controller.h"
 
 namespace extensions {
 
-class MediaGalleriesGetMediaFileSystemsFunction : public SyncExtensionFunction {
+class MediaGalleriesGetMediaFileSystemsFunction :
+    public AsyncExtensionFunction,
+    public chrome::MediaGalleriesDialogDelegate {
  public:
   DECLARE_EXTENSION_FUNCTION_NAME("mediaGalleries.getMediaFileSystems")
 
  protected:
   virtual ~MediaGalleriesGetMediaFileSystemsFunction();
   virtual bool RunImpl() OVERRIDE;
+
+ private:
+  void ReturnGalleries();
+  void ShowDialog();
+
+  // MediaGalleriesDialogDelegate implementation:
+  virtual void MediaGalleriesDialogFinished() OVERRIDE;
 };
 
 class MediaGalleriesAssembleMediaFileFunction : public SyncExtensionFunction {