RdpDesktopSession COM class should only use raw interfaces.

remoting/host/installer/win/chromoting.wxs

 <?xml version="1.0"?>
 <Wix xmlns="http://schemas.microsoft.com/wix/2006/wi">
 
   <?define EventSourceName = "chromoting" ?>
   <?define ServiceName = "chromoting" ?>
 
   <!-- TODO(alexeypa): There strings should be localized,
        see http://crbug.com/121785 -->
   <?if $(var.Branding) ~= Chrome ?>
     <?define ChromotingHost = "Chrome Remote Desktop Host" ?>
@@ skipping 16 matching lines @@
   <?define HostBinary = "remoting_host.exe" ?>
 
   <?define ChromotingTypelib = "{b6396c45-b0cc-456b-9f49-f12964ee6df4}" ?>
 
   <!-- AppIDs used by the COM components. -->
   <?define ControllerAppid = "{4ff35d5e-d226-4550-9248-03e7779e67de}" ?>
   <?define RdpAppid = "{52e6fd1a-f16e-49c0-aacb-5436a915448b}" ?>
 
   <?define ControllerClass = "ElevatedController Class" ?>
   <?define ControllerProgid =
-    "ChromotingElevatedController.ElevatedController" ?>
+      "ChromotingElevatedController.ElevatedController" ?>
+
+  <?define IRdpDesktopSessionId = "{126c22bc-34ef-4cfb-83ef-9b8ada3391e8}" ?>
+  <?define IRdpDesktopSessionEventHandlerId =
+      "{987bca97-9d40-42fc-a00d-e6a701261af5}" ?>
 
   <!--
     The long hex values below are security descriptors generated from SDDL
     definition using the PowerShell script below:
 
     $sddl = "<SDDL definition goes here>"
     $i = ([wmiclass]"Win32_SecurityDescriptorHelper").SDDLToBinarySD($sddl).BinarySD
     -join ($i | foreach {$_.ToString("X2")})
   -->
 
@@ skipping 308 matching lines @@
               <RegistryKey Key="LocalServer32" Action="create">
                 <RegistryValue Type="string"
                                Value="[binaries]$(var.HostBinary) --type=rdp_desktop_session"/>
               </RegistryKey>
 
               <RegistryKey Key="TypeLib" Action="create">
                 <RegistryValue Type="string"
                                Value="$(var.ChromotingTypelib)"/>
               </RegistryKey>
             </RegistryKey>
+
+            <!-- IRdpDesktopSession PSFactory -->
+            <RegistryKey Key="$(var.IRdpDesktopSessionId)"
+                         Action="create">
+              <RegistryValue Type="string"
+                             Value="IRdpDesktopSession PSFactory"/>
+
+              <RegistryKey Key="InprocServer32" Action="create">
+                <RegistryValue Type="string"
+                               Value="[binaries]$(var.CoreBinary)"/>
+              </RegistryKey>
+            </RegistryKey>
+
+            <!-- IRdpDesktopSessionEventHandler PSFactory -->
+            <RegistryKey Key="$(var.IRdpDesktopSessionEventHandlerId)"
+                         Action="create">
+              <RegistryValue Type="string"
+                             Value="IRdpDesktopSessionEventHandler PSFactory"/>
+
+              <RegistryKey Key="InprocServer32" Action="create">
+                <RegistryValue Type="string"
+                               Value="[binaries]$(var.CoreBinary)"/>
+              </RegistryKey>
+            </RegistryKey>
           </RegistryKey>
 
           <RegistryKey Key="Interface">
-            <!-- IRdpDesktopSession interface -->
-            <RegistryKey Key="{126c22bc-34ef-4cfb-83ef-9b8ada3391e8}"
-                         Action="create">
-              <RegistryKey Key="ProxyStubClsid32" Action="create">
-                <RegistryValue Type="string"
-                               Value="{00020424-0000-0000-C000-000000000046}"/>
-              </RegistryKey>
-
-              <RegistryKey Key="TypeLib" Action="create">
-                <RegistryValue Type="string"
-                               Value="$(var.ChromotingTypelib)"/>
-              </RegistryKey>
-            </RegistryKey>
-
             <!-- IDaemonControl2 interface -->
             <RegistryKey Key="{655bd819-c08c-4b04-80c2-f160739ff6ef}"
                          Action="create">
               <RegistryKey Key="ProxyStubClsid32" Action="create">
                 <RegistryValue Type="string"
                                Value="{00020424-0000-0000-C000-000000000046}"/>
               </RegistryKey>
 
               <RegistryKey Key="TypeLib" Action="create">
                 <RegistryValue Type="string"
                                Value="$(var.ChromotingTypelib)"/>
               </RegistryKey>
             </RegistryKey>
 
-            <!-- IRdpDesktopSessionEventHandler interface -->
-            <RegistryKey Key="{987bca97-9d40-42fc-a00d-e6a701261af5}"
+            <!-- IDaemonControl interface -->
+            <RegistryKey Key="{e051a481-6345-4ba1-bdb1-cf7929955268}"
                          Action="create">
               <RegistryKey Key="ProxyStubClsid32" Action="create">
                 <RegistryValue Type="string"
                                Value="{00020424-0000-0000-C000-000000000046}"/>
               </RegistryKey>
 
               <RegistryKey Key="TypeLib" Action="create">
                 <RegistryValue Type="string"
                                Value="$(var.ChromotingTypelib)"/>
               </RegistryKey>
             </RegistryKey>
 
-            <!-- IDaemonControl interface -->
-            <RegistryKey Key="{e051a481-6345-4ba1-bdb1-cf7929955268}"
+            <!-- IRdpDesktopSession interface -->
+            <RegistryKey Key="$(var.IRdpDesktopSessionId)"
                          Action="create">
+              <RegistryValue Type="string"
+                             Value="IRdpDesktopSession"/>
               <RegistryKey Key="ProxyStubClsid32" Action="create">
                 <RegistryValue Type="string"
-                               Value="{00020424-0000-0000-C000-000000000046}"/>
+                               Value="$(var.IRdpDesktopSessionId)"/>
+              </RegistryKey>
+            </RegistryKey>
+
+            <!-- IRdpDesktopSessionEventHandler interface -->
+            <RegistryKey Key="$(var.IRdpDesktopSessionEventHandlerId)"
+                         Action="create">
+              <RegistryValue Type="string"
+                             Value="IRdpDesktopSessionEventHandler"/>
+              <RegistryKey Key="ProxyStubClsid32" Action="create">
+                <RegistryValue Type="string"
+                               Value="$(var.IRdpDesktopSessionEventHandlerId)"/>
               </RegistryKey>
 
               <RegistryKey Key="TypeLib" Action="create">
                 <RegistryValue Type="string"
                                Value="$(var.ChromotingTypelib)"/>
               </RegistryKey>
             </RegistryKey>
           </RegistryKey>
 
           <RegistryKey Key="Typelib">
@@ skipping 154 matching lines @@
       <Custom Action="set_service_description" Before="InstallInitialize">
         <![CDATA[VersionNT >= 600]]>
       </Custom>
 
       <!-- Schedule RemoveExistingProducts before installing any files.
            See http://msdn.microsoft.com/en-us/library/aa371197.aspx. -->
       <RemoveExistingProducts After="InstallInitialize" />
     </InstallExecuteSequence>
   </Product>
 </Wix>