Switch to standard integer types in ppapi/.

ppapi/tests/test_memory.cc

 // Copyright (c) 2011 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/tests/test_memory.h"
 
+#include <stddef.h>
+#include <stdint.h>
+
 #include "ppapi/c/dev/ppb_memory_dev.h"
 #include "ppapi/cpp/instance.h"
 #include "ppapi/cpp/module.h"
 #include "ppapi/tests/testing_instance.h"
 
 namespace {
 
 size_t kTestBufferSize = 1000;
 
 }  // namespace
@@ skipping 22 matching lines @@
   PASS();
 }
 
 std::string TestMemory::TestNullMemFree() {
   // Failure crashes the test.
   memory_dev_interface_->MemFree(NULL);
 
   PASS();
 }