Implement File constructor.

Source/core/fileapi/File.h

Index: Source/core/fileapi/File.h
diff --git a/Source/core/fileapi/File.h b/Source/core/fileapi/File.h
index c6d8db4b4f420d2c124fa3c414076d924af7ab08..b08da75d2f4a35a9b2a8f2780154a2e6a0bf5282 100644
--- a/Source/core/fileapi/File.h
+++ b/Source/core/fileapi/File.h
@@ -49,6 +49,11 @@ public:
         return adoptRef(new File(path, policy));
     }
 
+    static PassRefPtr<File> create(const String& name, double modificationTime, PassRefPtr<BlobDataHandle> blobDataHandle)
+    {
+        return adoptRef(new File(name, modificationTime, blobDataHandle));
+    }
+
     // For deserialization.
     static PassRefPtr<File> create(const String& path, PassRefPtr<BlobDataHandle> blobDataHandle)
     {
@@ -82,6 +87,7 @@ public:
 
     virtual unsigned long long size() const;
     virtual bool isFile() const { return true; }
+    virtual bool isOnFilesystem() const { return m_isOnFilesystem; }
 
     const String& path() const { return m_path; }
     const String& name() const { return m_name; }
@@ -99,12 +105,14 @@ private:
     File(const String& path, ContentTypeLookupPolicy);
     File(const String& path, const String& name, ContentTypeLookupPolicy);
     File(const String& path, PassRefPtr<BlobDataHandle>);
+    File(const String& name, double modificationTime, PassRefPtr<BlobDataHandle>);
     File(const String& name, const FileMetadata&);
     File(const KURL& fileSystemURL, const FileMetadata&);
 
     // Returns true if this has a valid snapshot metadata (i.e. m_snapshotSize >= 0).
     bool hasValidSnapshotMetadata() const { return m_snapshotSize >= 0; }
 
+    bool m_isOnFilesystem;
     String m_path;
     String m_name;