MachMessageServer: eliminate argument redundancy

util/mach/mach_message_test.cc

Index: util/mach/mach_message_test.cc
diff --git a/util/mach/mach_message_test.cc b/util/mach/mach_message_test.cc
index eed6c8e21820deaef30e10a2100bef89e7546c39..9877e2d1343dfc22f220abd999ef385cefd8f629 100644
--- a/util/mach/mach_message_test.cc
+++ b/util/mach/mach_message_test.cc
@@ -23,16 +23,21 @@ namespace test {
 namespace {
 
 TEST(MachMessage, MachMessageDeadlineFromTimeout) {
-  MachMessageDeadline deadline_0 = MachMessageDeadlineFromTimeout(0);
-  EXPECT_EQ(kMachMessageNonblocking, deadline_0);
+  MachMessageDeadline deadline_0 =
+      MachMessageDeadlineFromTimeout(kMachMessageTimeoutNonblocking);
+  EXPECT_EQ(kMachMessageDeadlineNonblocking, deadline_0);
+
+  deadline_0 =
+      MachMessageDeadlineFromTimeout(kMachMessageTimeoutWaitIndefinitely);
+  EXPECT_EQ(kMachMessageDeadlineWaitIndefinitely, deadline_0);
 
   deadline_0 = MachMessageDeadlineFromTimeout(1);
   MachMessageDeadline deadline_1 = MachMessageDeadlineFromTimeout(100);
 
-  EXPECT_NE(kMachMessageNonblocking, deadline_0);
-  EXPECT_NE(kMachMessageWaitIndefinitely, deadline_0);
-  EXPECT_NE(kMachMessageNonblocking, deadline_1);
-  EXPECT_NE(kMachMessageWaitIndefinitely, deadline_1);
+  EXPECT_NE(kMachMessageDeadlineNonblocking, deadline_0);
+  EXPECT_NE(kMachMessageDeadlineWaitIndefinitely, deadline_0);
+  EXPECT_NE(kMachMessageDeadlineNonblocking, deadline_1);
+  EXPECT_NE(kMachMessageDeadlineWaitIndefinitely, deadline_1);
   EXPECT_GE(deadline_1, deadline_0);
 }