Migrate RenderProcessHost, ChildThread to InterfaceRegistry/Provider

content/public/child/child_thread.h

Index: content/public/child/child_thread.h
diff --git a/content/public/child/child_thread.h b/content/public/child/child_thread.h
index 94eb3212a0347fb4024d8cf4feb7a275af48d4b2..06bb8122a1101f536e1f29afa2f99bc0a8b4337b 100644
--- a/content/public/child/child_thread.h
+++ b/content/public/child/child_thread.h
@@ -20,6 +20,11 @@ namespace base {
 struct UserMetricsAction;
 }
 
+namespace shell {
+class InterfaceProvider;
+class InterfaceRegistry;
+}
+
 namespace content {
 
 // An abstract base class that contains logic shared between most child
@@ -59,6 +64,14 @@ class CONTENT_EXPORT ChildThread : public IPC::Sender {
   // When you use this you need to also update the rules for extracting known
   // actions in chrome/tools/extract_actions.py.
   virtual void RecordComputedAction(const std::string& action) = 0;
+
+  // Returns the InterfaceRegistry that this process uses to expose interfaces
+  // to the browser.
+  virtual shell::InterfaceRegistry* GetInterfaceRegistry() = 0;
+
+  // Returns the InterfaceProvider that this process can use to bind
+  // interfaces exposed to it by the browser.
+  virtual shell::InterfaceProvider* GetRemoteInterfaces() = 0;
 };
 
 }  // namespace content