Convert network hints to Mojo

components/network_hints/browser/network_hints_message_filter.cc

Index: components/network_hints/browser/network_hints_message_filter.cc
diff --git a/components/network_hints/browser/network_hints_message_filter.cc b/components/network_hints/browser/network_hints_message_filter.cc
index 20f8342cc958f1ecb99ca71da798d7c901e628bc..dd1c12c138bb2eecd78b7d4571eacefd3590ee64 100644
--- a/components/network_hints/browser/network_hints_message_filter.cc
+++ b/components/network_hints/browser/network_hints_message_filter.cc
@@ -7,7 +7,6 @@
 #include "base/logging.h"
 #include "base/macros.h"
 #include "components/network_hints/common/network_hints_common.h"
-#include "components/network_hints/common/network_hints_messages.h"
 #include "ipc/ipc_message_macros.h"
 #include "net/base/address_list.h"
 #include "net/base/net_errors.h"
@@ -63,27 +62,18 @@ class DnsLookupRequest {
 
 }  // namespace
 
-NetworkHintsMessageFilter::NetworkHintsMessageFilter(
-    net::HostResolver* host_resolver)
-    : content::BrowserMessageFilter(NetworkHintsMsgStart),
-      host_resolver_(host_resolver) {
-  DCHECK(host_resolver_);
+void NetworkHintsImpl::Bind(mojom::NetworkHintsRequest request) {
+  bindings_.AddBinding(this, std::move(request));
 }
 
-NetworkHintsMessageFilter::~NetworkHintsMessageFilter() {
+NetworkHintsImpl::NetworkHintsImpl(net::HostResolver* host_resolver)
+    : host_resolver_(host_resolver) {
+  DCHECK(host_resolver_);
 }
 
-bool NetworkHintsMessageFilter::OnMessageReceived(const IPC::Message& message) {
-  bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP(NetworkHintsMessageFilter, message)
-    IPC_MESSAGE_HANDLER(NetworkHintsMsg_DNSPrefetch, OnDnsPrefetch)
-    IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP()
-  return handled;
-}
+NetworkHintsImpl::~NetworkHintsImpl() {}
 
-void NetworkHintsMessageFilter::OnDnsPrefetch(
-    const LookupRequest& lookup_request) {
+void NetworkHintsImpl::DNSPrefetch(const LookupRequest& lookup_request) {
   DCHECK(host_resolver_);
   for (const std::string& hostname : lookup_request.hostname_list) {
     DnsLookupRequest* request = new DnsLookupRequest(host_resolver_, hostname);