Revert of Upgrade the windows specific version of LaunchProcess to avoid raw handles.

cloud_print/virtual_driver/win/install/setup.cc

Index: cloud_print/virtual_driver/win/install/setup.cc
diff --git a/cloud_print/virtual_driver/win/install/setup.cc b/cloud_print/virtual_driver/win/install/setup.cc
index ad51a8e9448ea14da2954f405ce21bb2f6e51e6e..6597758858446d387bb38fa132b79fefc21d609b 100644
--- a/cloud_print/virtual_driver/win/install/setup.cc
+++ b/cloud_print/virtual_driver/win/install/setup.cc
@@ -138,16 +138,16 @@
   base::LaunchOptions options;
   options.wait = true;
 
-  base::Process regsvr32_process =
-      base::LaunchProcess(command_line.GetCommandLineString(), options);
-  if (!regsvr32_process.IsValid()) {
+  base::win::ScopedHandle regsvr32_handle;
+  if (!base::LaunchProcess(command_line.GetCommandLineString(), options,
+                           &regsvr32_handle)) {
     LOG(ERROR) << "Unable to launch regsvr32.exe.";
     return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
   }
 
   DWORD exit_code = S_OK;
   if (install) {
-    if (!GetExitCodeProcess(regsvr32_process.Handle(), &exit_code)) {
+    if (!GetExitCodeProcess(regsvr32_handle.Get(), &exit_code)) {
       LOG(ERROR) << "Unable to get regsvr32.exe exit code.";
       return GetLastHResult();
     }