Changing multiprocess test SpawnChild to return a struct.

sandbox/mac/xpc_message_server_unittest.cc

Index: sandbox/mac/xpc_message_server_unittest.cc
diff --git a/sandbox/mac/xpc_message_server_unittest.cc b/sandbox/mac/xpc_message_server_unittest.cc
index 0feaac975e434c0a34b5993e946d671a212e99a8..630833f28533e15c7a9a3fea72777f2e67088b62 100644
--- a/sandbox/mac/xpc_message_server_unittest.cc
+++ b/sandbox/mac/xpc_message_server_unittest.cc
@@ -147,18 +147,17 @@ TEST(XPCMessageServerTest, GetSenderPID) {
 #pragma GCC diagnostic pop
   ASSERT_EQ(KERN_SUCCESS, kr);
 
-  base::Process child = base::SpawnMultiProcessTestChild(
-      "GetSenderPID",
-      base::GetMultiProcessTestChildBaseCommandLine(),
+  base::SpawnChildResult spawn_child = base::SpawnMultiProcessTestChild(
+      "GetSenderPID", base::GetMultiProcessTestChildBaseCommandLine(),
       base::LaunchOptions());
-  ASSERT_TRUE(child.IsValid());
+  ASSERT_TRUE(spawn_child.process.IsValid());
 
   int exit_code = -1;
-  ASSERT_TRUE(child.WaitForExit(&exit_code));
+  ASSERT_TRUE(spawn_child.process.WaitForExit(&exit_code));
   EXPECT_EQ(0, exit_code);
 
-  EXPECT_EQ(child.Pid(), sender_pid);
-  EXPECT_EQ(child.Pid(), child_pid);
+  EXPECT_EQ(spawn_child.process.Pid(), sender_pid);
+  EXPECT_EQ(spawn_child.process.Pid(), child_pid);
   EXPECT_EQ(sender_pid, child_pid);
 }