Handle JS-created files in <input type="file">.

Source/modules/filesystem/DOMFileSystemSync.cpp

Index: Source/modules/filesystem/DOMFileSystemSync.cpp
diff --git a/Source/modules/filesystem/DOMFileSystemSync.cpp b/Source/modules/filesystem/DOMFileSystemSync.cpp
index c63594f65b380a84cdb0d414ee27b72e3f00834a..52ffdc3ee5915cfafd821c5e0cdb22fdc2de409e 100644
--- a/Source/modules/filesystem/DOMFileSystemSync.cpp
+++ b/Source/modules/filesystem/DOMFileSystemSync.cpp
@@ -139,7 +139,7 @@ public:
         // FIXME: We should use the snapshot metadata for all files.
         // https://www.w3.org/Bugs/Public/show_bug.cgi?id=17746
         if (m_type == FileSystemTypeTemporary || m_type == FileSystemTypePersistent) {
-            m_result->m_file = File::createWithName(metadata.platformPath, m_name);
+            m_result->m_file = File::createForFileSystemFile(metadata.platformPath, m_name);
         } else if (!metadata.platformPath.isEmpty()) {
             // If the platformPath in the returned metadata is given, we create a File object for the path.
             m_result->m_file = File::createForFileSystemFile(m_name, metadata).get();