Adds routed interface support between RenderFrameHost and RenderFrame

content/public/common/associated_interface_provider.h

+// 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.
+
+#ifndef CONTENT_PUBLIC_COMMON_ASSOCIATED_INTERFACE_PROVIDER_H_
+#define CONTENT_PUBLIC_COMMON_ASSOCIATED_INTERFACE_PROVIDER_H_
+
+#include <string>
+
+#include "mojo/public/cpp/bindings/associated_interface_ptr.h"
+#include "mojo/public/cpp/bindings/associated_interface_request.h"
+#include "mojo/public/cpp/bindings/scoped_interface_endpoint_handle.h"
+
+namespace mojo {
+class AssociatedGroup;
+}
+
+namespace content {
+
+// A helper interface for connecting to remote Channel-associated interfaces.
+class AssociatedInterfaceProvider {
+ public:
+  virtual ~AssociatedInterfaceProvider() {}
+
+  // Passes an associated endpoint handle to the remote end to be bound to a
+  // Channel-associated interface named |name|.
+  virtual void GetInterface(const std::string& name,
+                            mojo::ScopedInterfaceEndpointHandle handle) = 0;
+
+  // Returns an AssociatedGroup for the provider. This may be used to create
+  // new associated endpoints for use with Channel-associated interfaces.
+  virtual mojo::AssociatedGroup* GetAssociatedGroup() = 0;
+
+  // Templated helper for GetInterface().
+  template <typename Interface>
+  void GetInterface(mojo::AssociatedInterfacePtr<Interface>* proxy) {
+    mojo::AssociatedInterfaceRequest<Interface> request =
+        mojo::GetProxy(proxy, GetAssociatedGroup());
+    GetInterface(Interface::Name_, request.PassHandle());
+  }
+};
+
+}  // namespace content
+
+#endif  // CONTENT_PUBLIC_COMMON_ASSOCIATED_INTERFACE_PROVIDER_H_