Add relaunch into ASH and desktop support for Chrome on Windows 7.

chrome/browser/first_run/upgrade_util_win.cc

Index: chrome/browser/first_run/upgrade_util_win.cc
diff --git a/chrome/browser/first_run/upgrade_util_win.cc b/chrome/browser/first_run/upgrade_util_win.cc
index b71a87b9bc619d559db652f4ca80a32ac8c72550..8a683b4b2cb432b52401381810ae7a3f140e7f3b 100644
--- a/chrome/browser/first_run/upgrade_util_win.cc
+++ b/chrome/browser/first_run/upgrade_util_win.cc
@@ -136,11 +136,15 @@ bool RelaunchChromeHelper(const CommandLine& command_line,
   chrome_exe_command_line.SetProgram(
       chrome_exe.DirName().Append(installer::kChromeExe));
 
-  if (base::win::GetVersion() < base::win::VERSION_WIN8)
+  if (base::win::GetVersion() < base::win::VERSION_WIN8 &&
+      relaunch_mode != RELAUNCH_MODE_METRO &&
+      relaunch_mode != RELAUNCH_MODE_DESKTOP)
     return base::LaunchProcess(chrome_exe_command_line,
                                base::LaunchOptions(), NULL);
 
   // On Windows 8 we always use the delegate_execute for re-launching chrome.
+  // On Windows 7 we use delegate_execute for re-launching chrome into Windows
+  // ASH.
   //
   // Pass this Chrome's Start Menu shortcut path to the relauncher so it can re-
   // activate chrome via ShellExecute which will wait until we exit. Since