Remove remaining Dart-specific perl code in Dartium

Source/build/scripts/name_macros.py

Index: Source/build/scripts/name_macros.py
diff --git a/Source/build/scripts/name_macros.py b/Source/build/scripts/name_macros.py
index 9aa4e570ff817e0e8e946707d65adcf392c163e2..1ebd07c8d0a47f1e573a5b40726199bddd685624 100644
--- a/Source/build/scripts/name_macros.py
+++ b/Source/build/scripts/name_macros.py
@@ -71,7 +71,8 @@ class Writer(in_generator.Writer):
         self._unconditional_entries = []
         self._validate_entries()
         self._sort_entries_by_conditional()
-        self._outputs = {(self.namespace + "Headers.h"): self.generate_headers_header,
+        self._outputs = {(self.namespace + "Headers.h"): self.generate_v8_headers_header,
+                         ('Dart' + self.namespace + "Headers.h"): self.generate_dart_headers_header,
                          (self.namespace + "Interfaces.h"): self.generate_interfaces_header,
                         }
 
@@ -123,27 +124,34 @@ class Writer(in_generator.Writer):
             path = entry['name']
         return path + '.h'
 
-    def _headers_header_includes(self, entries):
+    def _headers_header_includes(self, entries, engine):
         includes = dict()
         for entry in entries:
             cpp_name = name_utilities.cpp_name(entry)
             # Avoid duplicate includes.
             if cpp_name in includes:
                 continue
-            include = '#include "%(path)s"\n#include "V8%(script_name)s.h"' % {
+            include = '#include "%(path)s"\n#include "%(engine)s%(script_name)s.h"' % {
                 'path': self._headers_header_include_path(entry),
                 'script_name': name_utilities.script_name(entry),
+                'engine': engine,
             }
             includes[cpp_name] = self.wrap_with_condition(include, entry['Conditional'])
         return includes.values()
 
-    def generate_headers_header(self):
+    def _generate_headers_header(self, engine):
         return HEADER_TEMPLATE % {
             'license': license.license_for_generated_cpp(),
             'namespace': self.namespace,
-            'includes': '\n'.join(self._headers_header_includes(self.in_file.name_dictionaries)),
+            'includes': '\n'.join(self._headers_header_includes(self.in_file.name_dictionaries, engine)),
         }
 
+    def generate_dart_headers_header(self):
+        return self._generate_headers_header('Dart')
+
+    def generate_v8_headers_header(self):
+        return self._generate_headers_header('V8')
+
     def _declare_one_conditional_macro(self, conditional, entries):
         macro_name = '%(macro_style_name)s_INTERFACES_FOR_EACH_%(conditional)s' % {
             'macro_style_name': name_utilities.to_macro_style(self.namespace),