Replace IOSurfaceManager by directly passing IOSurface Mach ports over Chrome IPC.

base/mac/scoped_mach_port.cc

Index: base/mac/scoped_mach_port.cc
diff --git a/base/mac/scoped_mach_port.cc b/base/mac/scoped_mach_port.cc
index 13307f2c9d2557d2d858c36791a1b616eb306616..52f7dc9758cec6ece35beed8ba221b708573e06e 100644
--- a/base/mac/scoped_mach_port.cc
+++ b/base/mac/scoped_mach_port.cc
@@ -33,6 +33,24 @@ void PortSetTraits::Free(mach_port_t port) {
       << "ScopedMachPortSet mach_port_mod_refs";
 }
 
+// static
+void RefCountedSendRighTraits::Retain(mach_port_t port) {
+  kern_return_t kr =
+      mach_port_mod_refs(mach_task_self(), port, MACH_PORT_RIGHT_SEND, 1);
+
+  MACH_LOG_IF(ERROR, kr != KERN_SUCCESS, kr)
+      << "RefCountedSendRighTraits::Retain mach_port_mod_refs";
+}
+
+// static
+void RefCountedSendRighTraits::Release(mach_port_t port) {
+  kern_return_t kr =
+      mach_port_mod_refs(mach_task_self(), port, MACH_PORT_RIGHT_SEND, -1);
+
+  MACH_LOG_IF(ERROR, kr != KERN_SUCCESS, kr)
+      << "RefCountedSendRighTraits::Release mach_port_mod_refs";
+}
+
 }  // namespace internal
 }  // namespace mac
 }  // namespace base