Pepper: Simplify idl_thunk implementation.

ppapi/thunk/ppb_url_loader_trusted_thunk.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.
 
-// From trusted/ppb_url_loader_trusted.idl modified Wed Apr 17 09:21:10 2013.
+// From trusted/ppb_url_loader_trusted.idl modified Wed Apr 17 11:16:00 2013.
 
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/c/trusted/ppb_url_loader_trusted.h"
 #include "ppapi/shared_impl/tracked_callback.h"
 #include "ppapi/thunk/enter.h"
 #include "ppapi/thunk/ppb_instance_api.h"
 #include "ppapi/thunk/ppb_url_loader_api.h"
 #include "ppapi/thunk/resource_creation_api.h"
 #include "ppapi/thunk/thunk.h"
 
 namespace ppapi {
 namespace thunk {
 
 namespace {
 
 void GrantUniversalAccess(PP_Resource loader) {
   VLOG(4) << "PPB_URLLoaderTrusted::GrantUniversalAccess()";
   EnterResource<PPB_URLLoader_API> enter(loader, true);
-  if (enter.succeeded())
-    enter.object()->GrantUniversalAccess();
+  if (enter.failed())
+    return;
+  enter.object()->GrantUniversalAccess();
 }
 
 void RegisterStatusCallback(PP_Resource loader,
                             PP_URLLoaderTrusted_StatusCallback cb) {
   VLOG(4) << "PPB_URLLoaderTrusted::RegisterStatusCallback()";
   EnterResource<PPB_URLLoader_API> enter(loader, true);
-  if (enter.succeeded())
-    enter.object()->RegisterStatusCallback(cb);
+  if (enter.failed())
+    return;
+  enter.object()->RegisterStatusCallback(cb);
 }
 
 const PPB_URLLoaderTrusted_0_3 g_ppb_urlloadertrusted_thunk_0_3 = {
   &GrantUniversalAccess,
   &RegisterStatusCallback
 };
 
 }  // namespace
 
 const PPB_URLLoaderTrusted_0_3* GetPPB_URLLoaderTrusted_0_3_Thunk() {
   return &g_ppb_urlloadertrusted_thunk_0_3;
 }
 
 }  // namespace thunk
 }  // namespace ppapi