Set --enable-touch-event by default on Win7+

chrome/browser/chrome_browser_main_win.cc

Index: chrome/browser/chrome_browser_main_win.cc
diff --git a/chrome/browser/chrome_browser_main_win.cc b/chrome/browser/chrome_browser_main_win.cc
index 047530b0371bdcc4ed40446069360d6a84db5e84..8136fe1a70d47bae16b1efe5735a66df28bf4cb5 100644
--- a/chrome/browser/chrome_browser_main_win.cc
+++ b/chrome/browser/chrome_browser_main_win.cc
@@ -150,6 +150,11 @@ int DoUninstallTasks(bool chrome_still_running) {
 ChromeBrowserMainPartsWin::ChromeBrowserMainPartsWin(
     const content::MainFunctionParams& parameters)
     : ChromeBrowserMainParts(parameters) {
+  if ((base::win::GetVersion() >= base::win::VERSION_WIN7) &&
+      (base::win::IsTouchEnabled())) {
+    CommandLine::ForCurrentProcess()->AppendSwitch(
+        switches::kEnableTouchEvents);
+  }
   if (base::win::IsMetroProcess()) {
     typedef const wchar_t* (*GetMetroSwitches)(void);
     GetMetroSwitches metro_switches_proc = reinterpret_cast<GetMetroSwitches>(