Declarative resource hints go through mojo IPC to //content

third_party/WebKit/public/platform/resource_hints.mojom

Index: third_party/WebKit/public/platform/resource_hints.mojom
diff --git a/third_party/WebKit/public/platform/resource_hints.mojom b/third_party/WebKit/public/platform/resource_hints.mojom
new file mode 100644
index 0000000000000000000000000000000000000000..698f737f92fe66c4e063c1ae457918610a167a44
--- /dev/null
+++ b/third_party/WebKit/public/platform/resource_hints.mojom
@@ -0,0 +1,16 @@
+// Copyright 2016 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.
+
+module blink.mojom;
+
+import "url/mojo/url.mojom";
+
+// The ResourceHintsDispatcherHost sends preconnect/preresolve requests based

[yzshen1, 2016/06/10 15:45:43]

please update the comments accordingly

[Charlie Harrison, 2016/06/16 21:31:22]

Done.

+// on link tags/headers. See the corresponding interface in
+// content/public/resource_hints.h.
+// TODO(csharrison): Extend this interface to include page scans and link hovers.
+interface ResourceHintsHandler {
+  Preconnect(url.mojom.Url url, bool credentials_flag, uint8 num_connections);
+  Preresolve(url.mojom.Url url);
+};