[Bindings] Refactoring of binding code around runtime enabled features

third_party/WebKit/Source/bindings/scripts/code_generator.py

 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # pylint: disable=import-error,print-statement,relative-import
 
 """Plumbing for a Jinja-based code generator, including CodeGeneratorBase, a base class for all generators."""
 
 import os
 import posixpath
 import re
 import sys
 
 from idl_types import set_ancestors, IdlType
 from v8_globals import includes
 from v8_interface import constant_filters
 from v8_types import set_component_dirs
 from v8_methods import method_filters
+import v8_utilities
 from v8_utilities import capitalize, unique_by
 from utilities import (idl_filename_to_component, is_valid_component_dependency,
                        format_remove_duplicates, format_blink_cpp_source_code)
 
 # Path handling for libraries and templates
 # Paths have to be normalized because Jinja uses the exact template path to
 # determine the hash used in the cache filename, and we need a pre-caching step
 # to be concurrency-safe. Use absolute path because __file__ is absolute if
 # module is imported, and relative if executed directly.
 # If paths differ between pre-caching and individual file compilation, the cache
@@ skipping 28 matching lines @@
 
 
 # [SecureContext]
 def secure_context_if(code, secure_context_test):
     if not secure_context_test:
         return code
     return generate_indented_conditional(code, 'executionContext && (%s)' % secure_context_test)
 
 
 # [RuntimeEnabled]
-def runtime_enabled_if(code, runtime_enabled_function_name):
-    if not runtime_enabled_function_name:
+def runtime_enabled_if(code, name):
+    if not name:
         return code
-    return generate_indented_conditional(code, '%s()' % runtime_enabled_function_name)
+
+    function = 'RuntimeEnabledFeatures::%sEnabled()' % v8_utilities.uncapitalize(name)
+    return generate_indented_conditional(code, function)
 
 
 def initialize_jinja_env(cache_dir):
     jinja_env = jinja2.Environment(
         loader=jinja2.FileSystemLoader(TEMPLATES_DIR),
         # Bytecode cache is not concurrency-safe unless pre-cached:
         # if pre-cached this is read-only, but writing creates a race condition.
         bytecode_cache=jinja2.FileSystemBytecodeCache(cache_dir),
         keep_trailing_newline=True,  # newline-terminate generated files
         lstrip_blocks=True,  # so can indent control flow tags
@@ skipping 99 matching lines @@
 
     # Create a dummy file as output for the build system,
     # since filenames of individual cache files are unpredictable and opaque
     # (they are hashes of the template path, which varies based on environment)
     with open(dummy_filename, 'w') as dummy_file:
         pass  # |open| creates or touches the file
 
 
 if __name__ == '__main__':
     sys.exit(main(sys.argv))