Support exposing Mojo services between render frames, render threads, and their respective hosts.

content/common/render_frame_setup.mojom

Index: content/common/render_frame_setup.mojom
diff --git a/content/common/render_frame_setup.mojom b/content/common/render_frame_setup.mojom
new file mode 100644
index 0000000000000000000000000000000000000000..0315f0621adc645b7257ddfe4b222cd0375dac4e
--- /dev/null
+++ b/content/common/render_frame_setup.mojom
@@ -0,0 +1,14 @@
+// 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.
+
+import "../../mojo/public/interfaces/interface_provider/interface_provider.mojom"
+
+module content {
+
+interface RenderFrameSetup {
+  GetServiceProviderForFrame(int32 frame_routing_id,
+                             mojo.IInterfaceProvider& service_provider);
+};
+
+}