Support WebSQLDatabases in incognito mode.

webkit/database/vfs_backend.h

Index: webkit/database/vfs_backend.h
===================================================================
--- webkit/database/vfs_backend.h	(revision 49482)
+++ webkit/database/vfs_backend.h	(working copy)
@@ -15,15 +15,18 @@
 
 class VfsBackend {
  public:
+  static void GetFileHandleForProcess(base::ProcessHandle process_handle,
+                                      const base::PlatformFile& file_handle,
+                                      base::PlatformFile* target_handle,
+                                      bool close_source_handle);
+
   static void OpenFile(const FilePath& file_path,
                        int desired_flags,
-                       base::ProcessHandle handle,
-                       base::PlatformFile* target_handle);
+                       base::PlatformFile* file_handle);
 
   static void OpenTempFileInDirectory(const FilePath& dir_path,
                                       int desired_flags,
-                                      base::ProcessHandle handle,
-                                      base::PlatformFile* target_handle);
+                                      base::PlatformFile* file_handle);
 
   static int DeleteFile(const FilePath& file_path, bool sync_dir);
 
@@ -33,6 +36,7 @@
 
   // Used to make decisions in the DatabaseDispatcherHost.
   static bool FileTypeIsMainDB(int desired_flags);
+  static bool FileTypeIsJournal(int desired_flags);
   static bool OpenTypeIsReadWrite(int desired_flags);
 
  private: