Have FindContainerScanResults() find broader media container directories

chrome/browser/media_galleries/media_scan_manager.h

Index: chrome/browser/media_galleries/media_scan_manager.h
diff --git a/chrome/browser/media_galleries/media_scan_manager.h b/chrome/browser/media_galleries/media_scan_manager.h
index 707bd0ed69e022f4b5343033a89ca412ef0df27e..0ff0f45f0b7a71ee4cf977a7ca0f2159848dd9d8 100644
--- a/chrome/browser/media_galleries/media_scan_manager.h
+++ b/chrome/browser/media_galleries/media_scan_manager.h
@@ -53,6 +53,7 @@ class MediaScanManager : public extensions::ExtensionRegistryObserver {
 
  protected:
   friend class MediaGalleriesPlatformAppBrowserTest;
+  friend class MediaScanManagerTest;
 
   typedef base::Callback<MediaFolderFinder*(
       const MediaFolderFinder::MediaFolderFinderResultsCallback&)>
@@ -60,6 +61,11 @@ class MediaScanManager : public extensions::ExtensionRegistryObserver {
 
   void SetMediaFolderFinderFactory(const MediaFolderFinderFactory& factory);
 
+  // Here so that friend MediaScanManagerTest can access it.
+  static MediaFolderFinder::MediaFolderFinderResults FindContainerScanResults(
+      const MediaFolderFinder::MediaFolderFinderResults& found_folders,
+      const std::vector<base::FilePath>& sensitive_locations);
+
  private:
   struct ScanObservers {
     ScanObservers();