Convert network hints to Mojo

components/network_hints/browser/network_hints_message_filter.h

Index: components/network_hints/browser/network_hints_message_filter.h
diff --git a/components/network_hints/browser/network_hints_message_filter.h b/components/network_hints/browser/network_hints_message_filter.h
index f30216ef426f55d4ca11f75ec199e80533755a93..690048c1f67f18fafde45b94abd644f754c388d5 100644
--- a/components/network_hints/browser/network_hints_message_filter.h
+++ b/components/network_hints/browser/network_hints_message_filter.h
@@ -6,7 +6,8 @@
 #define COMPONENTS_NETWORK_HINTS_BROWSER_NETWORK_HINTS_MESSAGE_FILTER_H_
 
 #include "base/macros.h"
-#include "content/public/browser/browser_message_filter.h"
+#include "components/network_hints/common/network_hints.mojom.h"
+#include "mojo/public/cpp/bindings/binding_set.h"
 
 namespace net {
 class HostResolver;
@@ -18,21 +19,25 @@ struct LookupRequest;
 // Simple browser-side handler for DNS prefetch requests.
 // Passes prefetch requests to the provided net::HostResolver.
 // Each renderer process requires its own filter.
-class NetworkHintsMessageFilter : public content::BrowserMessageFilter {
+class NetworkHintsImpl : public network_hints::mojom::NetworkHints {
  public:
-  explicit NetworkHintsMessageFilter(net::HostResolver* host_resolver);
+  explicit NetworkHintsImpl(net::HostResolver* host_resolver);
+  ~NetworkHintsImpl() override;
 
-  // content::BrowserMessageFilter implementation:
-  bool OnMessageReceived(const IPC::Message& message) override;
+  void Bind(mojo::InterfaceRequest<mojom::NetworkHints> request);
 
  private:
-  ~NetworkHintsMessageFilter() override;
-
-  void OnDnsPrefetch(const LookupRequest& lookup_request);
+  // network_hints::mojom::NetworkHints implementation:
+  void DNSPrefetch(const LookupRequest& lookup_request) override;
+  void Preconnect(const GURL& url,

[Julia Tuttle, 2016/07/18 14:39:29]

Why is this empty?

[tibell, 2016/07/19 01:55:36]

In the Chrome IPC implementation this message was simply ignored (see the .cc
file). This is the Mojo version of ignoring a message.

+                  bool allow_credentials,
+                  int32_t count) override {}
 
   net::HostResolver* host_resolver_;
 
-  DISALLOW_COPY_AND_ASSIGN(NetworkHintsMessageFilter);
+  mojo::BindingSet<mojom::NetworkHints> bindings_;
+
+  DISALLOW_COPY_AND_ASSIGN(NetworkHintsImpl);
 };
 
 }  // namespace network_hints