share dm and command flags

gyp/iOSShell.gyp

 #
 {
   'conditions' : [
     [ 'skia_os == "ios"', {
       'targets': [
         {
           'target_name': 'iOSShell',
           'type': 'executable',
           'mac_bundle' : 1,
           'includes': [
-            'tests.gypi',
-                'pathops_unittest.gypi',
+            'dm.gypi',
           ],
           'dependencies': [
             'tools.gyp:crash_handler',
             'views.gyp:views',
             'xml.gyp:xml',
           ],
           'sources': [
             '../tests/skia_test.cpp',
             '../tools/iOSShell.cpp',
             '../src/views/mac/SkEventNotifier.mm',
@@ skipping 53 matching lines @@
               'dependencies': [
                 'gputest.gyp:skgputest',
               ],
             }],
           ],
         },
       ],
     }],
   ]
 }