Remove the HostEventStub aggregate interface.

remoting/host/session_event_executor_win.h

Index: remoting/host/session_event_executor_win.h
diff --git a/remoting/host/session_event_executor_win.h b/remoting/host/session_event_executor_win.h
index 15c2cb91f61c510c9d4f031a6dea9dfc03c8acdb..8e18675c11280becd35933df7d7fa094da4f96fa 100644
--- a/remoting/host/session_event_executor_win.h
+++ b/remoting/host/session_event_executor_win.h
@@ -13,7 +13,6 @@
 #include "ipc/ipc_channel.h"
 #include "remoting/host/event_executor.h"
 #include "remoting/host/win/scoped_thread_desktop.h"
-#include "remoting/protocol/host_event_stub.h"
 
 namespace base {
 class SingleThreadTaskRunner;
@@ -39,9 +38,11 @@ class SessionEventExecutorWin : public EventExecutor,
       scoped_ptr<protocol::ClipboardStub> client_clipboard) OVERRIDE;
   virtual void OnSessionFinished() OVERRIDE;
 
-  // protocol::HostStub implementation.
+  // protocol::ClipboardStub implementation.
   virtual void InjectClipboardEvent(
       const protocol::ClipboardEvent& event) OVERRIDE;
+
+  // protocol::InputStub implementation.
   virtual void InjectKeyEvent(const protocol::KeyEvent& event) OVERRIDE;
   virtual void InjectMouseEvent(const protocol::MouseEvent& event) OVERRIDE;