fileapi: Rename FileSystemMountProvider to FileSystemBackend

webkit/browser/fileapi/syncable/syncable_file_system_operation.h

Index: webkit/browser/fileapi/syncable/syncable_file_system_operation.h
diff --git a/webkit/browser/fileapi/syncable/syncable_file_system_operation.h b/webkit/browser/fileapi/syncable/syncable_file_system_operation.h
index 821dbfa8321f4ee6b296b011c3b64ed7c9cb38c2..e8e5c6536f354829eb39f0ab5a4ceead7e022bbb 100644
--- a/webkit/browser/fileapi/syncable/syncable_file_system_operation.h
+++ b/webkit/browser/fileapi/syncable/syncable_file_system_operation.h
@@ -18,7 +18,7 @@
 namespace fileapi {
 class FileSystemContext;
 class FileSystemOperationContext;
-class SandboxMountPointProvider;
+class SandboxFileSystemBackend;
 }
 
 namespace sync_file_system {
@@ -87,9 +87,9 @@ class WEBKIT_STORAGE_BROWSER_EXPORT SyncableFileSystemOperation
   typedef SyncableFileSystemOperation self;
   class QueueableTask;
 
-  // Only MountPointProviders can create a new operation directly.
-  friend class fileapi::SandboxMountPointProvider;
-  friend class SandboxMountPointProvider;
+  // Only FileSystemBackends can create a new operation directly.
+  friend class fileapi::SandboxFileSystemBackend;
+  friend class SandboxFileSystemBackend;
   SyncableFileSystemOperation(
       const fileapi::FileSystemURL& url,
       fileapi::FileSystemContext* file_system_context,