adds WARP support to Chromium, for Metro mode only, on Windows 8

win8/delegate_execute/command_execute_impl.cc

Index: win8/delegate_execute/command_execute_impl.cc
diff --git a/win8/delegate_execute/command_execute_impl.cc b/win8/delegate_execute/command_execute_impl.cc
index b62319aa51e189e7bc719c88e6cd919265a827fe..aea54f3142a0c735f03e008e573cc34fa0b0036f 100644
--- a/win8/delegate_execute/command_execute_impl.cc
+++ b/win8/delegate_execute/command_execute_impl.cc
@@ -28,6 +28,7 @@
 #include "chrome/installer/util/shell_util.h"
 #include "chrome/installer/util/util_constants.h"
 #include "ui/base/clipboard/clipboard_util_win.h"
+#include "ui/base/ui_base_switches.h"
 #include "ui/gfx/win/dpi.h"
 #include "win8/delegate_execute/chrome_util.h"
 #include "win8/delegate_execute/delegate_execute_util.h"
@@ -154,7 +155,8 @@ bool CommandExecuteImpl::path_provider_initialized_ = false;
 //    c) If the activation returns E_APPLICATION_NOT_REGISTERED, then we fall
 //       back to launching chrome on the desktop via LaunchDestopChrome().  Note
 //       that this case can lead to strange behavior, because at this point we
-//       have pre-launched the browser with --silent-launch --viewer-connect.
+//       have pre-launched the browser with:
+//       --silent-launch --connect-to-metro-viewer.
 //       E_APPLICATION_NOT_REGISTERED is always returned if Chrome is not the
 //       default browser (this case will have already been checked for by
 //       GetLaunchMode() and AHE_DESKTOP returned), but we don't know if it can