Add real_path option to LaunchProcess

base/process/launch_win.cc

Index: base/process/launch_win.cc
diff --git a/base/process/launch_win.cc b/base/process/launch_win.cc
index 1349b3e4af3d101d4515e04d5ae081195e73016a..47e2c7412ac235024f1fa05b7d1816e01afef28d 100644
--- a/base/process/launch_win.cc
+++ b/base/process/launch_win.cc
@@ -272,6 +272,8 @@ Process LaunchProcess(const string16& cmdline,
                                   : options.current_directory.value().c_str();
 
   string16 writable_cmdline(cmdline);
+  const char16* executable_path = !options.real_path.empty() ?
+      options.real_path.value().c_str() : nullptr;
   if (options.as_user) {
     flags |= CREATE_UNICODE_ENVIRONMENT;
     void* enviroment_block = nullptr;
@@ -282,8 +284,8 @@ Process LaunchProcess(const string16& cmdline,
     }
 
     BOOL launched = CreateProcessAsUser(
-        options.as_user, nullptr, &writable_cmdline[0], nullptr, nullptr,
-        inherit_handles, flags, enviroment_block, current_directory,
+        options.as_user, executable_path, &writable_cmdline[0], nullptr,
+        nullptr, inherit_handles, flags, enviroment_block, current_directory,
         startup_info, &temp_process_info);
     DestroyEnvironmentBlock(enviroment_block);
     if (!launched) {
@@ -292,7 +294,7 @@ Process LaunchProcess(const string16& cmdline,
       return Process();
     }
   } else {
-    if (!CreateProcess(nullptr, &writable_cmdline[0], nullptr, nullptr,
+    if (!CreateProcess(executable_path, &writable_cmdline[0], nullptr, nullptr,
                        inherit_handles, flags, nullptr, current_directory,
                        startup_info, &temp_process_info)) {
       DPLOG(ERROR) << "Command line:" << std::endl << UTF16ToUTF8(cmdline)
@@ -322,7 +324,8 @@ Process LaunchProcess(const string16& cmdline,
 
 Process LaunchElevatedProcess(const CommandLine& cmdline,
                               const LaunchOptions& options) {
-  const string16 file = cmdline.GetProgram().value();
+  const string16 file = !options.real_path.empty() ?
+      options.real_path.value() : cmdline.GetProgram().value();
   const string16 arguments = cmdline.GetArgumentsString();
 
   SHELLEXECUTEINFO shex_info = {};