sas.dll is not included to Windows 8 SDK. Use one from from Windows 7 SDK instead.

build/all.gyp

Index: build/all.gyp
diff --git a/build/all.gyp b/build/all.gyp
index d042c4d580b305681a8e172ef65f2f5967fab4b5..864e30b914e67f6ff0314961293a3ecdc3a97582 100644
--- a/build/all.gyp
+++ b/build/all.gyp
@@ -555,7 +555,7 @@
                   ],
                 }], # internal_pdf
                 ['component != "shared_library" and wix_exists == "True" and \
-                    platformsdk_exists == "True"', {
+                    sas_dll_exists == "True"', {
                   'dependencies': [
                     '../remoting/remoting.gyp:remoting_host_installation',
                     '../remoting/remoting.gyp:remoting_host_installation_unittest',