Add initial code to do filename munging in the FileSystem....

webkit/fileapi/file_system_operation.h

Index: webkit/fileapi/file_system_operation.h
===================================================================
--- webkit/fileapi/file_system_operation.h	(revision 72915)
+++ webkit/fileapi/file_system_operation.h	(working copy)
@@ -8,7 +8,7 @@
 #include <vector>
 
 #include "base/file_path.h"
-#include "base/file_util_proxy.h"
+#include "base/file_util_proxy_base.h"
 #include "base/message_loop_proxy.h"
 #include "base/platform_file.h"
 #include "base/ref_counted.h"
@@ -30,6 +30,7 @@
 namespace fileapi {
 
 class FileSystemCallbackDispatcher;
+class FileUtilProxyBase;
 class FileWriterDelegate;
 
 // This class is designed to serve one-time file system operation per instance.
@@ -108,6 +109,7 @@
 #endif
 
   FileSystemCallbackDispatcher* dispatcher() const { return dispatcher_.get(); }
+  virtual base::FileUtilProxyBase* file_util_proxy() const;
 
  private:
   // Callback for CreateFile for |exclusive|=true cases.
@@ -132,7 +134,7 @@
 
   void DidReadDirectory(
       base::PlatformFileError rv,
-      const std::vector<base::FileUtilProxy::Entry>& entries);
+      const std::vector<base::FileUtilProxyBase::Entry>& entries);
 
   void DidWrite(
       base::PlatformFileError rv,