Revert of Convert network hints to Mojo

components/network_hints/common/network_hints_messages.h

Index: components/network_hints/common/network_hints_messages.h
diff --git a/components/network_hints/common/network_hints_messages.h b/components/network_hints/common/network_hints_messages.h
new file mode 100644
index 0000000000000000000000000000000000000000..82fce8f0f93c62e2f44eab49d905d9bd6f27ef1a
--- /dev/null
+++ b/components/network_hints/common/network_hints_messages.h
@@ -0,0 +1,50 @@
+// 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.
+
+// Multiply-included file, no traditional include guard.
+#include <string>
+#include <vector>
+
+#include "components/network_hints/common/network_hints_common.h"
+#include "ipc/ipc_message_macros.h"
+#include "ipc/ipc_message_utils.h"
+#include "url/ipc/url_param_traits.h"
+
+// Singly-included section for custom IPC traits.
+#ifndef COMPONENTS_NETWORK_HINTS_COMMON_NETWORK_HINTS_MESSAGES_H_
+#define COMPONENTS_NETWORK_HINTS_COMMON_NETWORK_HINTS_MESSAGES_H_
+
+namespace IPC {
+
+template <>
+struct ParamTraits<network_hints::LookupRequest> {
+  typedef network_hints::LookupRequest param_type;
+  static void Write(base::Pickle* m, const param_type& p);
+  static bool Read(const base::Pickle* m,
+                   base::PickleIterator* iter,
+                   param_type* r);
+  static void Log(const param_type& p, std::string* l);
+};
+
+}  // namespace IPC
+
+#endif  // COMPONENTS_NETWORK_HINTS_COMMON_NETWORK_HINTS_MESSAGES_H_
+
+#define IPC_MESSAGE_START NetworkHintsMsgStart
+
+//-----------------------------------------------------------------------------
+// Host messages
+// These are messages sent from the renderer process to the browser process.
+
+// Request for a DNS prefetch of the names in the array.
+// NameList is typedef'ed std::vector<std::string>
+IPC_MESSAGE_CONTROL1(NetworkHintsMsg_DNSPrefetch,
+                     network_hints::LookupRequest)
+
+
+// Request for preconnect to host providing resource specified by URL
+IPC_MESSAGE_CONTROL3(NetworkHintsMsg_Preconnect,
+                     GURL /* preconnect target url */,
+                     bool /* Does connection have its credentials flag set */,
+                     int /* number of connections */)