[mojo-edk] Duplicate process handle and take ownership in NodeChannel.

mojo/edk/system/node_controller.cc

Index: mojo/edk/system/node_controller.cc
diff --git a/mojo/edk/system/node_controller.cc b/mojo/edk/system/node_controller.cc
index 07108b849be825e3bf7935e8e0ba3ce8e7369c39..5fc55f557d7063cd50071b398a17f90bdc5d320d 100644
--- a/mojo/edk/system/node_controller.cc
+++ b/mojo/edk/system/node_controller.cc
@@ -179,6 +179,19 @@ void NodeController::ConnectToChild(
     DCHECK(inserted);
   }
 
+#if defined(OS_WIN)
+  // On Windows, we need to duplicate the process handle because we have no
+  // control over its lifetime and it may become invalid by the time the posted
+  // task runs.
+  HANDLE dup_handle = INVALID_HANDLE_VALUE;
+  BOOL ok = ::DuplicateHandle(
+      base::GetCurrentProcessHandle(), process_handle,
+      base::GetCurrentProcessHandle(), &dup_handle,
+      0, FALSE, DUPLICATE_SAME_ACCESS);
+  DPCHECK(ok);
+  process_handle = dup_handle;
+#endif
+
   io_task_runner_->PostTask(
       FROM_HERE,
       base::Bind(&NodeController::ConnectToChildOnIOThread,