PPAPI: Fix interface functions that take PP_CompletionCallbacks, but don't

ppapi/tests/test_video_decoder.cc

Index: ppapi/tests/test_video_decoder.cc
===================================================================
--- ppapi/tests/test_video_decoder.cc	(revision 87892)
+++ ppapi/tests/test_video_decoder.cc	(working copy)
@@ -6,6 +6,7 @@
 
 #include "ppapi/c/dev/ppb_video_decoder_dev.h"
 #include "ppapi/c/dev/ppb_testing_dev.h"
+#include "ppapi/c/pp_errors.h"
 #include "ppapi/c/ppb_var.h"
 #include "ppapi/tests/testing_instance.h"
 
@@ -20,18 +21,24 @@
 }
 
 void TestVideoDecoder::RunTest() {
-  instance_->LogTest("Create", TestCreate());
+  RUN_TEST(CreateAndInitialize);
 }
 
 void TestVideoDecoder::QuitMessageLoop() {
   testing_interface_->QuitMessageLoop(instance_->pp_instance());
 }
 
-std::string TestVideoDecoder::TestCreate() {
+std::string TestVideoDecoder::TestCreateAndInitialize() {
   PP_Resource decoder = video_decoder_interface_->Create(
-      instance_->pp_instance(), NULL, PP_MakeCompletionCallback(NULL, NULL));
-  if (decoder == 0) {
-    return "Error creating the decoder";
-  }
+      instance_->pp_instance());
+  if (decoder == 0)
+    return "Create: error creating the decoder";
+
+  int32_t pp_error = video_decoder_interface_->Initialize(
+      decoder, NULL, PP_BlockUntilComplete());
+  pp::Module::Get()->core()->ReleaseResource(decoder);
+  if (pp_error != PP_ERROR_BADARGUMENT)
+    return "Initialize: error detecting null callback";
+
   PASS();
 }