Migrate dart:html codegenerator to new embedder's API.

lib/html/scripts/systemnative.py

 #!/usr/bin/python
 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 """This module provides shared functionality for the systems to generate
 native binding from the IDL database."""
 
 import emitter
 import os
@@ skipping 584 matching lines @@
     v8EnabledPerContext = ext_attrs.get('synthesizedV8EnabledPerContext', ext_attrs.get('V8EnabledPerContext'))
     v8EnabledAtRuntime = ext_attrs.get('synthesizedV8EnabledAtRuntime', ext_attrs.get('V8EnabledAtRuntime'))
     assert(not (v8EnabledPerContext and v8EnabledAtRuntime))
 
     if v8EnabledPerContext:
       raises_exceptions = True
       self._cpp_impl_includes.add('"ContextFeatures.h"')
       self._cpp_impl_includes.add('"DOMWindow.h"')
       runtime_check = emitter.Format(
           '        if (!ContextFeatures::$(FEATURE)Enabled(DartUtilities::domWindowForCurrentIsolate()->document())) {\n'
-          '            exception = Dart_NewString("Feature $FEATURE is not enabled");\n'
+          '            exception = Dart_NewStringFromCString("Feature $FEATURE is not enabled");\n'
           '            goto fail;\n'
           '        }',
           FEATURE=v8EnabledPerContext)
 
     if v8EnabledAtRuntime:
       raises_exceptions = True
       self._cpp_impl_includes.add('"RuntimeEnabledFeatures.h"')
       runtime_check = emitter.Format(
           '        if (!RuntimeEnabledFeatures::$(FEATURE)Enabled()) {\n'
-          '            exception = Dart_NewString("Feature $FEATURE is not enabled");\n'
+          '            exception = Dart_NewStringFromCString("Feature $FEATURE is not enabled");\n'
           '            goto fail;\n'
           '        }',
           FEATURE=self._ToWebKitName(v8EnabledAtRuntime))
 
     body_emitter = self._cpp_definitions_emitter.Emit(
         '\n'
         'static void $CALLBACK_NAME(Dart_NativeArguments args)\n'
         '{\n'
         '    DartApiScope dartApiScope;\n'
         '$!BODY'
@@ skipping 21 matching lines @@
 
     if runtime_check:
       body_emitter.Emit(
           '$RUNTIME_CHECK\n',
           RUNTIME_CHECK=runtime_check)
 
     if requires_script_execution_context:
       body_emitter.Emit(
           '        ScriptExecutionContext* context = DartUtilities::scriptExecutionContext();\n'
           '        if (!context) {\n'
-          '            exception = Dart_NewString("Failed to retrieve a context");\n'
+          '            exception = Dart_NewStringFromCString("Failed to retrieve a context");\n'
           '            goto fail;\n'
           '        }\n\n')
 
     if requires_dom_window:
       self._cpp_impl_includes.add('"DOMWindow.h"')
       body_emitter.Emit(
           '        DOMWindow* domWindow = DartUtilities::domWindowForCurrentIsolate();\n'
           '        if (!domWindow) {\n'
-          '            exception = Dart_NewString("Failed to fetch domWindow");\n'
+          '            exception = Dart_NewStringFromCString("Failed to fetch domWindow");\n'
           '            goto fail;\n'
           '        }\n'
           '        Document* document = domWindow->document();\n')
 
     if needs_receiver:
       body_emitter.Emit(
           '        $WEBCORE_CLASS_NAME* receiver = DartDOMWrapper::receiver< $WEBCORE_CLASS_NAME >(args);\n',
           WEBCORE_CLASS_NAME=self._interface_type_info.native_type())
 
     if requires_stack_info:
@@ skipping 181 matching lines @@
   def EmitResolver(self, template, output_dir):
     file_path = os.path.join(output_dir, 'DartResolver.cpp')
     includes_emitter, body_emitter = self._emitters.FileEmitter(file_path).Emit(template)
     for header_file in self._headers_list:
       path = os.path.relpath(header_file, output_dir)
       includes_emitter.Emit('#include "$PATH"\n', PATH=path)
       body_emitter.Emit(
           '    if (Dart_NativeFunction func = $CLASS_NAME::resolver(name, argumentCount))\n'
           '        return func;\n',
           CLASS_NAME=os.path.splitext(os.path.basename(path))[0])