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

webkit/fileapi/sandboxed_file_system_context.cc

Index: webkit/fileapi/sandboxed_file_system_context.cc
===================================================================
--- webkit/fileapi/sandboxed_file_system_context.cc	(revision 72915)
+++ webkit/fileapi/sandboxed_file_system_context.cc	(working copy)
@@ -5,9 +5,11 @@
 #include "webkit/fileapi/sandboxed_file_system_context.h"
 
 #include "base/file_util.h"
+#include "base/file_util_proxy.h"
 #include "base/message_loop_proxy.h"
 #include "webkit/fileapi/file_system_path_manager.h"
 #include "webkit/fileapi/file_system_quota_manager.h"
+#include "webkit/fileapi/obfuscated_file_util_proxy.h"
 
 namespace fileapi {
 
@@ -17,16 +19,26 @@
     const FilePath& profile_path,
     bool is_incognito,
     bool allow_file_access,
-    bool unlimited_quota)
+    bool unlimited_quota,
+    bool obfuscate)
     : file_message_loop_(file_message_loop),
       io_message_loop_(io_message_loop),
       path_manager_(new FileSystemPathManager(
           file_message_loop, profile_path, is_incognito, allow_file_access)),
       quota_manager_(new FileSystemQuotaManager(
           allow_file_access, unlimited_quota)) {
+  if (obfuscate) {
+    delete_file_util_proxy_ = true;
+    file_util_proxy_ = new ObfuscatedFileUtilProxy(this);
+  } else {
+    delete_file_util_proxy_ = false;
+    file_util_proxy_ = base::FileUtilProxy::GetInstance();
+  }
 }
 
 SandboxedFileSystemContext::~SandboxedFileSystemContext() {
+  if (delete_file_util_proxy_)
+    delete file_util_proxy_;
 }
 
 void SandboxedFileSystemContext::Shutdown() {