Pepper: Simplify idl_thunk implementation.

ppapi/thunk/ppb_content_decryptor_private_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 private/ppb_content_decryptor_private.idl,
-//   modified Thu Mar 28 11:12:59 2013.
+//   modified Tue Apr 16 11:25:44 2013.
 
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/c/private/ppb_content_decryptor_private.h"
 #include "ppapi/shared_impl/tracked_callback.h"
 #include "ppapi/thunk/enter.h"
 #include "ppapi/thunk/ppb_instance_api.h"
 #include "ppapi/thunk/resource_creation_api.h"
 #include "ppapi/thunk/thunk.h"
 
 namespace ppapi {
 namespace thunk {
 
 namespace {
 
 void NeedKey(PP_Instance instance,
              struct PP_Var key_system,
              struct PP_Var session_id,
              struct PP_Var init_data) {
   VLOG(4) << "PPB_ContentDecryptor_Private::NeedKey()";
   EnterInstance enter(instance);
-  if (enter.succeeded())
-    enter.functions()->NeedKey(instance, key_system, session_id, init_data);
+  if (enter.failed())
+    return;
+  enter.functions()->NeedKey(instance, key_system, session_id, init_data);
 }
 
 void KeyAdded(PP_Instance instance,
               struct PP_Var key_system,
               struct PP_Var session_id) {
   VLOG(4) << "PPB_ContentDecryptor_Private::KeyAdded()";
   EnterInstance enter(instance);
-  if (enter.succeeded())
-    enter.functions()->KeyAdded(instance, key_system, session_id);
+  if (enter.failed())
+    return;
+  enter.functions()->KeyAdded(instance, key_system, session_id);
 }
 
 void KeyMessage(PP_Instance instance,
                 struct PP_Var key_system,
                 struct PP_Var session_id,
                 struct PP_Var message,
                 struct PP_Var default_url) {
   VLOG(4) << "PPB_ContentDecryptor_Private::KeyMessage()";
   EnterInstance enter(instance);
-  if (enter.succeeded())
-    enter.functions()->KeyMessage(instance,
-                                  key_system,
-                                  session_id,
-                                  message,
-                                  default_url);
+  if (enter.failed())
+    return;
+  enter.functions()->KeyMessage(instance,
+                                key_system,
+                                session_id,
+                                message,
+                                default_url);
 }
 
 void KeyError(PP_Instance instance,
               struct PP_Var key_system,
               struct PP_Var session_id,
               int32_t media_error,
               int32_t system_code) {
   VLOG(4) << "PPB_ContentDecryptor_Private::KeyError()";
   EnterInstance enter(instance);
-  if (enter.succeeded())
-    enter.functions()->KeyError(instance,
-                                key_system,
-                                session_id,
-                                media_error,
-                                system_code);
+  if (enter.failed())
+    return;
+  enter.functions()->KeyError(instance,
+                              key_system,
+                              session_id,
+                              media_error,
+                              system_code);
 }
 
 void DeliverBlock(PP_Instance instance,
                   PP_Resource decrypted_block,
                   const struct PP_DecryptedBlockInfo* decrypted_block_info) {
   VLOG(4) << "PPB_ContentDecryptor_Private::DeliverBlock()";
   EnterInstance enter(instance);
-  if (enter.succeeded())
-    enter.functions()->DeliverBlock(instance,
-                                    decrypted_block,
-                                    decrypted_block_info);
+  if (enter.failed())
+    return;
+  enter.functions()->DeliverBlock(instance,
+                                  decrypted_block,
+                                  decrypted_block_info);
 }
 
 void DecoderInitializeDone(PP_Instance instance,
                            PP_DecryptorStreamType decoder_type,
                            uint32_t request_id,
                            PP_Bool success) {
   VLOG(4) << "PPB_ContentDecryptor_Private::DecoderInitializeDone()";
   EnterInstance enter(instance);
-  if (enter.succeeded())
-    enter.functions()->DecoderInitializeDone(instance,
-                                             decoder_type,
-                                             request_id,
-                                             success);
+  if (enter.failed())
+    return;
+  enter.functions()->DecoderInitializeDone(instance,
+                                           decoder_type,
+                                           request_id,
+                                           success);
 }
 
 void DecoderDeinitializeDone(PP_Instance instance,
                              PP_DecryptorStreamType decoder_type,
                              uint32_t request_id) {
   VLOG(4) << "PPB_ContentDecryptor_Private::DecoderDeinitializeDone()";
   EnterInstance enter(instance);
-  if (enter.succeeded())
-    enter.functions()->DecoderDeinitializeDone(instance,
-                                               decoder_type,
-                                               request_id);
+  if (enter.failed())
+    return;
+  enter.functions()->DecoderDeinitializeDone(instance,
+                                             decoder_type,
+                                             request_id);
 }
 
 void DecoderResetDone(PP_Instance instance,
                       PP_DecryptorStreamType decoder_type,
                       uint32_t request_id) {
   VLOG(4) << "PPB_ContentDecryptor_Private::DecoderResetDone()";
   EnterInstance enter(instance);
-  if (enter.succeeded())
-    enter.functions()->DecoderResetDone(instance, decoder_type, request_id);
+  if (enter.failed())
+    return;
+  enter.functions()->DecoderResetDone(instance, decoder_type, request_id);
 }
 
 void DeliverFrame(PP_Instance instance,
                   PP_Resource decrypted_frame,
                   const struct PP_DecryptedFrameInfo* decrypted_frame_info) {
   VLOG(4) << "PPB_ContentDecryptor_Private::DeliverFrame()";
   EnterInstance enter(instance);
-  if (enter.succeeded())
-    enter.functions()->DeliverFrame(instance,
-                                    decrypted_frame,
-                                    decrypted_frame_info);
+  if (enter.failed())
+    return;
+  enter.functions()->DeliverFrame(instance,
+                                  decrypted_frame,
+                                  decrypted_frame_info);
 }
 
 void DeliverSamples(
     PP_Instance instance,
     PP_Resource audio_frames,
     const struct PP_DecryptedBlockInfo* decrypted_block_info) {
   VLOG(4) << "PPB_ContentDecryptor_Private::DeliverSamples()";
   EnterInstance enter(instance);
-  if (enter.succeeded())
-    enter.functions()->DeliverSamples(instance,
-                                      audio_frames,
-                                      decrypted_block_info);
+  if (enter.failed())
+    return;
+  enter.functions()->DeliverSamples(instance,
+                                    audio_frames,
+                                    decrypted_block_info);
 }
 
 const PPB_ContentDecryptor_Private_0_6
     g_ppb_contentdecryptor_private_thunk_0_6 = {
   &NeedKey,
   &KeyAdded,
   &KeyMessage,
   &KeyError,
   &DeliverBlock,
   &DecoderInitializeDone,
   &DecoderDeinitializeDone,
   &DecoderResetDone,
   &DeliverFrame,
   &DeliverSamples
 };
 
 }  // namespace
 
 const PPB_ContentDecryptor_Private_0_6*
     GetPPB_ContentDecryptor_Private_0_6_Thunk() {
   return &g_ppb_contentdecryptor_private_thunk_0_6;
 }
 
 }  // namespace thunk
 }  // namespace ppapi