iTunes file util and data provider for media galleries

chrome/browser/media_galleries/media_file_system_registry.cc

Index: chrome/browser/media_galleries/media_file_system_registry.cc
diff --git a/chrome/browser/media_galleries/media_file_system_registry.cc b/chrome/browser/media_galleries/media_file_system_registry.cc
index 42ecc918809c726959db87beab5a627d66ddf5ef..581aa6750369ea1ef0a6d2ffab45f7c93f203f53 100644
--- a/chrome/browser/media_galleries/media_file_system_registry.cc
+++ b/chrome/browser/media_galleries/media_file_system_registry.cc
@@ -562,9 +562,13 @@ class MediaFileSystemRegistry::MediaFileSystemContextImpl
 
     std::string fsid;
     if (StorageInfo::IsITunesDevice(device_id)) {
-      NOTIMPLEMENTED();
+      ImportedMediaGalleryRegistry* imported_registry =
+          ImportedMediaGalleryRegistry::GetInstance();
+      fsid = imported_registry->RegisterITunesFilesystemOnUIThread(path);
     } else if (StorageInfo::IsPicasaDevice(device_id)) {
-      fsid = ImportedMediaGalleryRegistry::RegisterPicasaFilesystemOnUIThread(
+      ImportedMediaGalleryRegistry* imported_registry =
+          ImportedMediaGalleryRegistry::GetInstance();
+      fsid = imported_registry->RegisterPicasaFilesystemOnUIThread(
           path);
     } else {
       fsid = IsolatedContext::GetInstance()->RegisterFileSystemForPath(
@@ -594,6 +598,11 @@ class MediaFileSystemRegistry::MediaFileSystemContextImpl
   }
 
   virtual void RevokeFileSystem(const std::string& fsid) OVERRIDE {
+    ImportedMediaGalleryRegistry* imported_registry =
+        ImportedMediaGalleryRegistry::GetInstance();
+    if (imported_registry->RevokeImportedFilesystemOnUIThread(fsid))
+      return;
+
     IsolatedContext::GetInstance()->RevokeFileSystem(fsid);
   }