[NotLanded] Implement the fetching algorithm of the Web Manifest.

public/platform/WebManifest.h

Index: public/platform/WebManifest.h
diff --git a/public/platform/WebManifest.h b/public/platform/WebManifest.h
new file mode 100644
index 0000000000000000000000000000000000000000..750de9a077b45df29d832d08aa7b594942044593
--- /dev/null
+++ b/public/platform/WebManifest.h
@@ -0,0 +1,19 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef WebManifest_h
+#define WebManifest_h
+
+namespace blink {
+
+// A representation of the Web Manifest as specified here:
+// https://w3c.github.io/manifest/
+struct WebManifest {
+    // FIXME: add supported members when Blink is able to parse the manifest,
+    // http://crbug.com/409696
+};
+
+} // namespace blink
+
+#endif