Add a GUID to base::SharedMemoryHandle.

sandbox/win/tests/common/controller.cc

Index: sandbox/win/tests/common/controller.cc
diff --git a/sandbox/win/tests/common/controller.cc b/sandbox/win/tests/common/controller.cc
index 24070e78c1bd7f256998c553cb74f1e9b2713771..6a498144f7cfcb719e71ee45f895c3cdabfa1c45 100644
--- a/sandbox/win/tests/common/controller.cc
+++ b/sandbox/win/tests/common/controller.cc
@@ -11,6 +11,7 @@
 #include "base/process/process_handle.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/sys_string_conversions.h"
+#include "base/unguessable_token.h"
 #include "base/win/windows_version.h"
 #include "sandbox/win/src/sandbox_factory.h"
 
@@ -315,7 +316,8 @@ int DispatchCall(int argc, wchar_t **argv) {
     base::StringToUint(argv[4], reinterpret_cast<unsigned int*>(&raw_handle));
     if (raw_handle == nullptr)
       return SBOX_TEST_INVALID_PARAMETER;
-    base::SharedMemoryHandle shared_handle(raw_handle);
+    base::SharedMemoryHandle shared_handle(raw_handle,
+                                           base::UnguessableToken::Create());
     base::SharedMemory read_only_view(shared_handle, true);
     if (!read_only_view.Map(0))
       return SBOX_TEST_INVALID_PARAMETER;