Do not return FileSystem contents if the profile is in incognito mode.

webkit/browser/fileapi/file_system_context.h

Index: webkit/browser/fileapi/file_system_context.h
diff --git a/webkit/browser/fileapi/file_system_context.h b/webkit/browser/fileapi/file_system_context.h
index 769420f17e5650fbab8e9147720bb8e92e60121a..9762b68ebc1c15708c5318f4fa5b285c10a91227 100644
--- a/webkit/browser/fileapi/file_system_context.h
+++ b/webkit/browser/fileapi/file_system_context.h
@@ -227,6 +227,10 @@ class WEBKIT_STORAGE_BROWSER_EXPORT FileSystemContext
     return sandbox_delegate_.get();
   }
 
+  // Returns true if the requested url is ok to be served.
+  // (E.g. this returns false if the context is created for incognito mode)
+  bool CanServeURLRequest(const FileSystemURL& url) const;
+
  private:
   typedef std::map<FileSystemType, FileSystemBackend*>
       FileSystemBackendMap;
@@ -308,6 +312,8 @@ class WEBKIT_STORAGE_BROWSER_EXPORT FileSystemContext
   // The base path of the storage partition for this context.
   const base::FilePath partition_path_;
 
+  bool is_incognito_;
+
   scoped_ptr<FileSystemOperationRunner> operation_runner_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(FileSystemContext);