content: Pass IOSurface references using Mach IPC.

content/browser/child_process_launcher.cc

Index: content/browser/child_process_launcher.cc
diff --git a/content/browser/child_process_launcher.cc b/content/browser/child_process_launcher.cc
index 23cf832e6652d9ab198cb85b7749bcdcc4aeda9c..1b0bbdc0960bd1f6bebde1e8501fb606fea5d302 100644
--- a/content/browser/child_process_launcher.cc
+++ b/content/browser/child_process_launcher.cc
@@ -26,6 +26,7 @@
 #include "content/public/common/sandbox_init.h"
 #elif defined(OS_MACOSX)
 #include "content/browser/bootstrap_sandbox_mac.h"
+#include "content/browser/browser_io_surface_manager_mac.h"
 #include "content/browser/mach_broker_mac.h"
 #include "sandbox/mac/bootstrap_sandbox.h"
 #elif defined(OS_ANDROID)
@@ -203,6 +204,9 @@ void LaunchOnLauncherThread(const NotifyCallback& callback,
     // check-in from the new process.
     broker->EnsureRunning();
 
+    // Make sure the IOSurfaceManager service is running.
+    BrowserIOSurfaceManager::GetInstance()->EnsureRunning();
+
     const int bootstrap_sandbox_policy = delegate->GetSandboxType();
     if (ShouldEnableBootstrapSandbox() &&
         bootstrap_sandbox_policy != SANDBOX_TYPE_INVALID) {