RdpDesktopSession COM class should only use raw interfaces.

remoting/remoting.gyp

Index: remoting/remoting.gyp
diff --git a/remoting/remoting.gyp b/remoting/remoting.gyp
index daf3619073f00f331cf97be74b8f6edf21f50f08..05c5c9b56a3c8c6b226de12c01f1113f7ad9669c 100644
--- a/remoting/remoting.gyp
+++ b/remoting/remoting.gyp
@@ -1183,6 +1183,24 @@
           ],
         },  # end of target 'remoting_lib_idl'
 
+        # remoting_lib_ps builds the proxy/stub code generated by MIDL (see
+        # remoting_lib_idl).
+        {
+          'target_name': 'remoting_lib_ps',
+          'type': 'static_library',
+          'defines': [
+            # Prepend 'Ps' to the MIDL-generated routines. This includes
+            # DllGetClassObject, DllCanUnloadNow, DllRegisterServer,
+            # DllUnregisterServer, and DllMain.
+            'ENTRY_PREFIX=Ps',
+            'REGISTER_PROXY_DLL',
+          ],
+          'sources': [
+            '<(SHARED_INTERMEDIATE_DIR)/remoting/host/chromoting_lib.dlldata.c',
+            '<(SHARED_INTERMEDIATE_DIR)/remoting/host/chromoting_lib_p.c',
+          ],
+        },  # end of target 'remoting_lib_ps'
+
         # Regenerates 'chromoting_lib.rc' (used to embed 'chromoting_lib.tlb'
         # into remoting_core.dll's resources) every time
         # 'chromoting_lib_idl.templ' changes. Making remoting_core depend on
@@ -1339,6 +1357,7 @@
             'remoting_host_event_logger',
             'remoting_host_logging',
             'remoting_lib_idl',
+            'remoting_lib_ps',
             'remoting_lib_rc',
             'remoting_me2me_host_static',
             'remoting_protocol',
@@ -1406,8 +1425,20 @@
             'VCLinkerTool': {
               'AdditionalDependencies': [
                 'comctl32.lib',
+                'rpcns4.lib',
+                'rpcrt4.lib',
+                'uuid.lib',
                 'wtsapi32.lib',
               ],
+              # Export the proxy/stub entry points. Note that the generated
+              # routines have 'Ps' prefix to avoid conflicts with our own
+              # DllMain().
+              'AdditionalOptions': [
+                '/EXPORT:DllGetClassObject=PsDllGetClassObject,PRIVATE',
+                '/EXPORT:DllCanUnloadNow=PsDllCanUnloadNow,PRIVATE',
+                '/EXPORT:DllRegisterServer=PsDllRegisterServer,PRIVATE',
+                '/EXPORT:DllUnregisterServer=PsDllUnregisterServer,PRIVATE',
+              ],
             },
           },
         },  # end of target 'remoting_core'