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

base/process/launch.h

Index: base/process/launch.h
diff --git a/base/process/launch.h b/base/process/launch.h
index 261019b138f5fe5da7f4e9fd0a451c8a1e06e0bb..4cd8066c6965c084a45ab16ad815ba891336b717 100644
--- a/base/process/launch.h
+++ b/base/process/launch.h
@@ -21,7 +21,7 @@
 #include "base/posix/file_descriptor_shuffle.h"
 #elif defined(OS_WIN)
 #include <windows.h>
-#include "base/win/scoped_handle.h"
+#include "base/process/process.h"
 #endif
 
 namespace base {
@@ -173,9 +173,8 @@ BASE_EXPORT bool LaunchProcess(const CommandLine& cmdline,
 //
 // Example (including literal quotes)
 //  cmdline = "c:\windows\explorer.exe" -foo "c:\bar\"
-BASE_EXPORT bool LaunchProcess(const string16& cmdline,
-                               const LaunchOptions& options,
-                               win::ScopedHandle* process_handle);
+BASE_EXPORT Process LaunchProcess(const string16& cmdline,
+                                  const LaunchOptions& options);
 
 // Launches a process with elevated privileges.  This does not behave exactly
 // like LaunchProcess as it uses ShellExecuteEx instead of CreateProcess to