share all the needed linux code with OpenBSD in chrome and content

chrome/renderer/nacl_desc_wrapper_chrome.cc

Index: chrome/renderer/nacl_desc_wrapper_chrome.cc
diff --git a/chrome/renderer/nacl_desc_wrapper_chrome.cc b/chrome/renderer/nacl_desc_wrapper_chrome.cc
index eb142993383181d62560d9199d17bc24d12de5ce..c29ae1d2558d9c648c227a9f0aad1daa8bfa3ff6 100644
--- a/chrome/renderer/nacl_desc_wrapper_chrome.cc
+++ b/chrome/renderer/nacl_desc_wrapper_chrome.cc
@@ -14,7 +14,7 @@ namespace nacl {
 DescWrapper* DescWrapperFactory::ImportPepperSharedMemory(intptr_t shm_int,
                                                           size_t size) {
   base::SharedMemory* shm = reinterpret_cast<base::SharedMemory*>(shm_int);
-#if defined(OS_LINUX) || defined(OS_MACOSX)
+#if defined(OS_LINUX) || defined(OS_MACOSX) || defined(OS_OPENBSD)
   return ImportShmHandle(shm->handle().fd, size);
 #elif defined(OS_WIN)
   return ImportShmHandle(shm->handle(), size);
@@ -25,7 +25,7 @@ DescWrapper* DescWrapperFactory::ImportPepperSharedMemory(intptr_t shm_int,
 
 DescWrapper* DescWrapperFactory::ImportPepper2DSharedMemory(intptr_t shm_int) {
   TransportDIB* dib = reinterpret_cast<TransportDIB*>(shm_int);
-#if defined(OS_LINUX)
+#if defined(OS_LINUX) || defined(OS_OPENBSD)
   // TransportDIBs use SysV (X) shared memory on Linux.
   return ImportSysvShm(dib->handle(), dib->size());
 #elif defined(OS_MACOSX)