Remove remaining Dart-specific perl code in Dartium

Source/bindings/dart/gyp/dartium.gyp

Index: Source/bindings/dart/gyp/dartium.gyp
diff --git a/Source/bindings/dart/gyp/dartium.gyp b/Source/bindings/dart/gyp/dartium.gyp
index 513be530002d0646b9c813424b4ef0f9c3dd5a7e..8125682202c5eec2392ade3dfe2ecd0e8053fc80 100644
--- a/Source/bindings/dart/gyp/dartium.gyp
+++ b/Source/bindings/dart/gyp/dartium.gyp
@@ -9,6 +9,7 @@
     'dart_dir': '../../../../../../dart',
     'dart_lib_dir': '<(dart_dir)/sdk/lib',
     'resources_dir': '../resources',
+    'build_dir': '../../../build',
     'core_dir': '../../../core',
     'modules_dir': '../../../modules',
     'core_gyp_dir': '<(core_dir)',
@@ -53,13 +54,12 @@
             '<(SHARED_INTERMEDIATE_DIR)/blink/DartDebugHooksSource.h',
           ],
           'action': [
-            'perl',
-            'scripts/xxd.pl',
+            'python',
+            '<(build_dir)/scripts/xxd.py',
             'DartDebugHooksSource_js',
             '<@(_inputs)',
             '<@(_outputs)'
           ],
-          'msvs_cygwin_shell': 1,
           'message': 'Generating DartDebugHooksSource.h from DartDebugHooks.js',
         },
       ]
@@ -72,44 +72,6 @@
       'dependencies': [
         '<(core_dir)/core_generated.gyp:make_core_generated#host',
       ],
-      'actions': [
-        {
-          'action_name': 'DartEventHeaders',
-          'inputs': [
-            'scripts/make_header.pl',
-            'scripts/EventNames.in',
-          ],
-          'outputs': [
-            '<(SHARED_INTERMEDIATE_DIR)/blink/DartEventHeaders.h',
-          ],
-          'action': [
-            'perl',
-            '-I', 'scripts',
-            'scripts/make_header.pl',
-            '--input', 'scripts/EventNames.in',
-            '--outputDir', '<(SHARED_INTERMEDIATE_DIR)/blink',
-          ],
-          'msvs_cygwin_shell': 1,
-        },
-        {
-          'action_name': 'DartEventTargetHeaders',
-          'inputs': [
-            'scripts/make_header.pl',
-            '<(core_dir)/events/EventTargetFactory.in',
-          ],
-          'outputs': [
-            '<(SHARED_INTERMEDIATE_DIR)/blink/DartEventTargetHeaders.h',
-          ],
-          'action': [
-            'perl',
-            '-I', 'scripts',
-            'scripts/make_header.pl',
-            '--input', '<(core_dir)/events/EventTargetFactory.in',
-            '--outputDir', '<(SHARED_INTERMEDIATE_DIR)/blink',
-          ],
-          'msvs_cygwin_shell': 1,
-        },
-      ],
     },
     {
       'target_name': 'dart_snapshot',
@@ -164,7 +126,6 @@
             '<(output_path)',
             '<(feature_defines)',
           ],
-          'msvs_cygwin_shell': 1,
         },
         {
           'action_name': 'build_dart_snapshot',
@@ -202,7 +163,6 @@
             '<(PRODUCT_DIR)/<(EXECUTABLE_PREFIX)gen_snapshot<(EXECUTABLE_SUFFIX)',
             '<@(pure_libs)',
           ],
-          'msvs_cygwin_shell': 1,
         },
       ],
     },