Changing multiprocess test SpawnChild to return a struct.

sandbox/mac/sandbox_mac_compiler_v2_unittest.mm

Index: sandbox/mac/sandbox_mac_compiler_v2_unittest.mm
diff --git a/sandbox/mac/sandbox_mac_compiler_v2_unittest.mm b/sandbox/mac/sandbox_mac_compiler_v2_unittest.mm
index aba42edbc9478a7fe05f7a73c533ed5330ca8a33..adb9895c3efd9062ccbc9159f3b46e221d2a262a 100644
--- a/sandbox/mac/sandbox_mac_compiler_v2_unittest.mm
+++ b/sandbox/mac/sandbox_mac_compiler_v2_unittest.mm
@@ -126,11 +126,11 @@ MULTIPROCESS_TEST_MAIN(V2ProfileProcess) {
 }
 
 TEST_F(SandboxMacCompilerV2Test, V2ProfileTest) {
-  base::Process process = SpawnChild("V2ProfileProcess");
-  ASSERT_TRUE(process.IsValid());
+  base::SpawnChildResult spawn_child = SpawnChild("V2ProfileProcess");
+  ASSERT_TRUE(spawn_child.process.IsValid());
   int exit_code = 42;
-  EXPECT_TRUE(process.WaitForExitWithTimeout(TestTimeouts::action_max_timeout(),
-                                             &exit_code));
+  EXPECT_TRUE(spawn_child.process.WaitForExitWithTimeout(
+      TestTimeouts::action_max_timeout(), &exit_code));
   EXPECT_EQ(exit_code, 0);
 }