content: Pass IOSurface references using Mach IPC.

content/child/child_thread_impl.cc

Index: content/child/child_thread_impl.cc
diff --git a/content/child/child_thread_impl.cc b/content/child/child_thread_impl.cc
index ca970ec4b94f45f4f3c8869647da0f937c632487..20ca404c63d8469b9cc72f50c63e30c064fa330e 100644
--- a/content/child/child_thread_impl.cc
+++ b/content/child/child_thread_impl.cc
@@ -69,6 +69,10 @@
 #include "third_party/tcmalloc/chromium/src/gperftools/heap-profiler.h"
 #endif
 
+#if defined(OS_MACOSX) && !defined(OS_IOS)
+#include "content/child/child_io_surface_manager_mac.h"
+#endif
+
 using tracked_objects::ThreadData;
 
 namespace content {
@@ -578,6 +582,10 @@ bool ChildThreadImpl::OnMessageReceived(const IPC::Message& msg) {
 #if defined(USE_TCMALLOC)
     IPC_MESSAGE_HANDLER(ChildProcessMsg_GetTcmallocStats, OnGetTcmallocStats)
 #endif
+#if defined(OS_MACOSX) && !defined(OS_IOS)
+    IPC_MESSAGE_HANDLER(ChildProcessMsg_SetIOSurfaceManagerToken,
+                        OnSetIOSurfaceManagerToken)
+#endif
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
@@ -634,6 +642,13 @@ void ChildThreadImpl::OnGetTcmallocStats() {
 }
 #endif
 
+#if defined(OS_MACOSX) && !defined(OS_IOS)
+void ChildThreadImpl::OnSetIOSurfaceManagerToken(
+    const IOSurfaceManagerToken& token) {
+  ChildIOSurfaceManager::GetInstance()->set_token(token);
+}
+#endif
+
 ChildThreadImpl* ChildThreadImpl::current() {
   return g_lazy_tls.Pointer()->Get();
 }