Exclude host-side code from the NaCl IRT proxy build.

ppapi/proxy/ppb_image_data_proxy.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.
 
 #include "ppapi/proxy/ppb_image_data_proxy.h"
 
 #include <string.h>  // For memcpy
 
 #include <map>
 #include <vector>
@@ skipping 474 matching lines @@
   // We serialize the PP_ImageDataDesc just by copying to a string.
   PP_ImageDataDesc desc;
   memcpy(&desc, image_data_desc.data(), sizeof(PP_ImageDataDesc));
 
   return (new ImageData(result, desc, image_handle))->GetReference();
 }
 
 bool PPB_ImageData_Proxy::OnMessageReceived(const IPC::Message& msg) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(PPB_ImageData_Proxy, msg)
+#if !defined(OS_NACL)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBImageData_Create, OnHostMsgCreate)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBImageData_CreateNaCl,
                         OnHostMsgCreateNaCl)
-
+#endif
     IPC_MESSAGE_HANDLER(PpapiMsg_PPBImageData_NotifyUnusedImageData,
                         OnPluginMsgNotifyUnusedImageData)
 
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
+#if !defined(OS_NACL)
 void PPB_ImageData_Proxy::OnHostMsgCreate(PP_Instance instance,
                                           int32_t format,
                                           const PP_Size& size,
                                           PP_Bool init_to_zero,
                                           HostResource* result,
                                           std::string* image_data_desc,
                                           ImageHandle* result_image_handle) {
-#if defined(OS_NACL)
-  // This message should never be received in untrusted code. To minimize the
-  // size of the IRT, we just don't handle it.
-  return;
-#else
   *result_image_handle = ImageData::NullHandle();
 
   thunk::EnterResourceCreation enter(instance);
   if (enter.failed())
     return;
 
   PP_Resource resource = enter.functions()->CreateImageData(
       instance, static_cast<PP_ImageDataFormat>(format), size, init_to_zero);
   if (!resource)
     return;
@@ skipping 11 matching lines @@
   uint32_t byte_count = 0;
   int32_t handle = 0;
   if (enter_resource.object()->GetSharedMemory(&handle, &byte_count) == PP_OK) {
 #if defined(OS_WIN)
     ImageHandle ih = ImageData::HandleFromInt(handle);
     *result_image_handle = dispatcher()->ShareHandleWithRemote(ih, false);
 #else
     *result_image_handle = ImageData::HandleFromInt(handle);
 #endif  // defined(OS_WIN)
   }
-#endif  // defined(OS_NACL)
 }
 
 void PPB_ImageData_Proxy::OnHostMsgCreateNaCl(
     PP_Instance instance,
     int32_t format,
     const PP_Size& size,
     PP_Bool init_to_zero,
     HostResource* result,
     std::string* image_data_desc,
     ppapi::proxy::SerializedHandle* result_image_handle) {
-#if defined(OS_NACL)
-  // This message should never be received in untrusted code. To minimize the
-  // size of the IRT, we just don't handle it.
-  return;
-#else
   result_image_handle->set_null_shmem();
   HostDispatcher* dispatcher = HostDispatcher::GetForInstance(instance);
   if (!dispatcher)
     return;
 
   thunk::EnterResourceCreation enter(instance);
   if (enter.failed())
     return;
 
   PP_Resource resource = enter.functions()->CreateImageDataNaCl(
@@ skipping 21 matching lines @@
 #if defined(OS_WIN)
       reinterpret_cast<HANDLE>(static_cast<intptr_t>(local_fd));
 #elif defined(OS_POSIX)
       local_fd;
 #else
   #error Not implemented.
 #endif  // defined(OS_WIN)
   result_image_handle->set_shmem(
       dispatcher->ShareHandleWithRemote(platform_file, false),
       byte_count);
-#endif  // defined(OS_NACL)
 }
+#endif  // !defined(OS_NACL)
 
 void PPB_ImageData_Proxy::OnPluginMsgNotifyUnusedImageData(
     const HostResource& old_image_data) {
   PluginGlobals* plugin_globals = PluginGlobals::Get();
   if (!plugin_globals)
     return;  // This may happen if the plugin is maliciously sending this
              // message to the renderer.
 
   EnterPluginFromHostResource<PPB_ImageData_API> enter(old_image_data);
   if (enter.succeeded()) {
     ImageData* image_data = static_cast<ImageData*>(enter.object());
     ImageDataCache::GetInstance()->ImageDataUsable(image_data);
   }
 
   // The renderer sent us a reference with the message. If the image data was
   // still cached in our process, the proxy still holds a reference so we can
   // remove the one the renderer just sent is. If the proxy no longer holds a
   // reference, we released everything and we should also release the one the
   // renderer just sent us.
   dispatcher()->Send(new PpapiHostMsg_PPBCore_ReleaseResource(
       API_ID_PPB_CORE, old_image_data));
 }
 
 }  // namespace proxy
 }  // namespace ppapi