MultiProcessTest: Update SpawnChild* to return a Process.

base/test/multiprocess_test.cc

Index: base/test/multiprocess_test.cc
diff --git a/base/test/multiprocess_test.cc b/base/test/multiprocess_test.cc
index 306c1090fec769167d1734ad81d00fb1b7f90a66..b95ea9823e37500ea5a033ae066df7332aaeacf2 100644
--- a/base/test/multiprocess_test.cc
+++ b/base/test/multiprocess_test.cc
@@ -10,7 +10,7 @@
 namespace base {
 
 #if !defined(OS_ANDROID)
-ProcessHandle SpawnMultiProcessTestChild(
+Process SpawnMultiProcessTestChild(
     const std::string& procname,
     const CommandLine& base_command_line,
     const LaunchOptions& options) {
@@ -21,9 +21,7 @@ ProcessHandle SpawnMultiProcessTestChild(
   if (!command_line.HasSwitch(switches::kTestChildProcess))
     command_line.AppendSwitchASCII(switches::kTestChildProcess, procname);
 
-  ProcessHandle handle = kNullProcessHandle;
-  LaunchProcess(command_line, options, &handle);
-  return handle;
+  return LaunchProcess(command_line, options);
 }
 #endif  // !defined(OS_ANDROID)
 
@@ -36,7 +34,7 @@ CommandLine GetMultiProcessTestChildBaseCommandLine() {
 MultiProcessTest::MultiProcessTest() {
 }
 
-ProcessHandle MultiProcessTest::SpawnChild(const std::string& procname) {
+Process MultiProcessTest::SpawnChild(const std::string& procname) {
   LaunchOptions options;
 #if defined(OS_WIN)
   options.start_hidden = true;
@@ -44,7 +42,7 @@ ProcessHandle MultiProcessTest::SpawnChild(const std::string& procname) {
   return SpawnChildWithOptions(procname, options);
 }
 
-ProcessHandle MultiProcessTest::SpawnChildWithOptions(
+Process MultiProcessTest::SpawnChildWithOptions(
     const std::string& procname,
     const LaunchOptions& options) {
   return SpawnMultiProcessTestChild(procname, MakeCmdLine(procname), options);