Change trusted shared memory interface to match audio....

ppapi/cpp/dev/buffer_dev.cc

 // Copyright (c) 2010 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/cpp/dev/buffer_dev.h"
 
 #include "ppapi/c/dev/ppb_buffer_dev.h"
 #include "ppapi/cpp/instance.h"
 #include "ppapi/cpp/module.h"
 #include "ppapi/cpp/module_impl.h"
 
 namespace {
 
 DeviceFuncs<PPB_Buffer_Dev> buffer_f(PPB_BUFFER_DEV_INTERFACE);
 
 }  // namespace
 
 namespace pp {
 
 Buffer_Dev::Buffer_Dev() : data_(NULL), size_(0) {
 }
 
 Buffer_Dev::Buffer_Dev(const Buffer_Dev& other)
     : Resource(other),
       data_(other.data_),
       size_(other.size_) {
 }
 
-Buffer_Dev::Buffer_Dev(int32_t size) : data_(NULL), size_(0) {
+Buffer_Dev::Buffer_Dev(uint32_t size) : data_(NULL), size_(0) {
   if (!buffer_f)
     return;
 
   PassRefFromConstructor(buffer_f->Create(Module::Get()->pp_module(), size));
   if (!buffer_f->Describe(pp_resource(), &size_) ||
       !(data_ = buffer_f->Map(pp_resource())))
     *this = Buffer_Dev();
 }
 
 Buffer_Dev::~Buffer_Dev() {
 }
 
 Buffer_Dev& Buffer_Dev::operator=(const Buffer_Dev& other) {
   Buffer_Dev copy(other);
   swap(copy);
   return *this;
 }
 
 void Buffer_Dev::swap(Buffer_Dev& other) {
   Resource::swap(other);
   std::swap(size_, other.size_);
   std::swap(data_, other.data_);
 }
 
 }  // namespace pp