test: test ARM64 MIDL rule

Author: refack

test/win/gyptest-midl-rules.py

@@ -17,12 +17,12 @@
 
   CHDIR = 'idl-rules'
   test.run_gyp('basic-idl.gyp', chdir=CHDIR)
-  for platform in ['Win32', 'x64']:
+  for platform in ['Win32', 'x64', 'ARM64']:
     test.set_configuration('Debug|%s' % platform)
     test.build('basic-idl.gyp', test.ALL, chdir=CHDIR)
 
     # Make sure ninja win_tool.py filters out noisy lines.
     if test.format == 'ninja' and 'Processing' in test.stdout():
       test.fail_test()
 
-    test.pass_test()
+  test.pass_test()

test/win/idl-rules/basic-idl.gyp

@@ -15,6 +15,10 @@
         'inherit_from': ['Debug'],
         'msvs_configuration_platform': 'x64',
       },
+      'Debug_ARM64': {
+        'inherit_from': ['Debug'],
+        'msvs_configuration_platform': 'ARM64',
+      },
     },
   },
   'targets': [