Make isolated file system works for a device root (e.g. X:\\)

webkit/support/webkit_support.cc

Index: webkit/support/webkit_support.cc
diff --git a/webkit/support/webkit_support.cc b/webkit/support/webkit_support.cc
index 66da94e278515a8974c1f5f6b9dddc3020596d06..3d4a717c6e8931d202f0bf5f3c31fe4c89ea58f3 100644
--- a/webkit/support/webkit_support.cc
+++ b/webkit/support/webkit_support.cc
@@ -772,12 +772,14 @@ void OpenFileSystem(WebFrame* frame, WebFileSystem::Type type,
 
 WebKit::WebString RegisterIsolatedFileSystem(
     const WebKit::WebVector<WebKit::WebString>& filenames) {
-  std::set<FilePath> files;
-  for (size_t i = 0; i < filenames.size(); ++i)
-    files.insert(webkit_glue::WebStringToFilePath(filenames[i]));
+  std::vector<fileapi::IsolatedContext::FileInfo> files;
+  for (size_t i = 0; i < filenames.size(); ++i) {
+    FilePath path = webkit_glue::WebStringToFilePath(filenames[i]);
+    files.push_back(fileapi::IsolatedContext::FileInfo(
+            fileapi::IsolatedContext::GetNameForPath(path), path));
+  }
   std::string filesystemId =
-      fileapi::IsolatedContext::GetInstance()->RegisterIsolatedFileSystem(
-          files);
+      fileapi::IsolatedContext::GetInstance()->RegisterFileSystem(files);
   return UTF8ToUTF16(filesystemId);
 }