Add ipc_channel_nacl to the untrusted build and fix all compile/link errors.

ppapi/proxy/ppb_instance_proxy.cc

 // Copyright (c) 2012 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.
 
 #include "ppapi/proxy/ppb_instance_proxy.h"
 
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/c/pp_time.h"
 #include "ppapi/c/pp_var.h"
 #include "ppapi/c/ppb_audio_config.h"
@@ skipping 395 matching lines @@
                                      PP_Var message) {
   dispatcher()->Send(new PpapiHostMsg_PPBInstance_PostMessage(
       API_ID_PPB_INSTANCE,
       instance, SerializedVarSendInput(dispatcher(), message)));
 }
 
 PP_Bool PPB_Instance_Proxy::SetCursor(PP_Instance instance,
                                       PP_MouseCursor_Type type,
                                       PP_Resource image,
                                       const PP_Point* hot_spot) {
+#if !defined(OS_NACL)
   // Some of these parameters are important for security. This check is in the
   // plugin process just for the convenience of the caller (since we don't
   // bother returning errors from the other process with a sync message). The
   // parameters will be validated again in the renderer.
   if (!ValidateSetCursorParams(type, image, hot_spot))
     return PP_FALSE;
 
   HostResource image_host_resource;
   if (image) {
     Resource* cursor_image =
         PpapiGlobals::Get()->GetResourceTracker()->GetResource(image);
     if (!cursor_image || cursor_image->pp_instance() != instance)
       return PP_FALSE;
     image_host_resource = cursor_image->host_resource();
   }
 
   dispatcher()->Send(new PpapiHostMsg_PPBInstance_SetCursor(
       API_ID_PPB_INSTANCE, instance, static_cast<int32_t>(type),
       image_host_resource, hot_spot ? *hot_spot : PP_MakePoint(0, 0)));
   return PP_TRUE;
+#else  // defined(OS_NACL)
+  return PP_FALSE;
+#endif
 }
 
 int32_t PPB_Instance_Proxy::LockMouse(PP_Instance instance,
                                       PP_CompletionCallback callback) {
   if (!callback.func)
     return PP_ERROR_BADARGUMENT;
 
   // Save the mouse callback on the instance data.
   InstanceData* data = static_cast<PluginDispatcher*>(dispatcher())->
       GetInstanceData(instance);
@@ skipping 253 matching lines @@
 }
 
 void PPB_Instance_Proxy::MouseLockCompleteInHost(int32_t result,
                                                  PP_Instance instance) {
   dispatcher()->Send(new PpapiMsg_PPBInstance_MouseLockComplete(
       API_ID_PPB_INSTANCE, instance, result));
 }
 
 }  // namespace proxy
 }  // namespace ppapi