Generate separate files for union type containers

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

Index: third_party/WebKit/Source/bindings/scripts/utilities.py
diff --git a/third_party/WebKit/Source/bindings/scripts/utilities.py b/third_party/WebKit/Source/bindings/scripts/utilities.py
index 23708876cfcbfe13ffc376823fc778c054f598b0..1d9bf8203f81abb2fa593fb28154cc6f15444a4e 100644
--- a/third_party/WebKit/Source/bindings/scripts/utilities.py
+++ b/third_party/WebKit/Source/bindings/scripts/utilities.py
@@ -9,6 +9,7 @@ Design doc: http://www.chromium.org/developers/design-documents/idl-build
 
 import os
 import cPickle as pickle
+import platform
 import re
 import shlex
 import string
@@ -88,7 +89,7 @@ class ComponentInfoProvider(object):
         return set()
 
     @property
-    def include_path_for_union_types(self):
+    def include_path_for_union_types(self, name):
         return None
 
 
@@ -118,9 +119,8 @@ class ComponentInfoProviderCore(ComponentInfoProvider):
     def union_types(self):
         return self._component_info['union_types']
 
-    @property
-    def include_path_for_union_types(self):
-        return 'bindings/core/v8/UnionTypesCore.h'
+    def include_path_for_union_types(self, name):
+        return 'bindings/core/v8/%s.h' % name
 
     @property
     def specifier_for_export(self):
@@ -165,9 +165,12 @@ class ComponentInfoProviderModules(ComponentInfoProvider):
         # generating multiple container generation.
         return self._component_info_modules['union_types'] - self._component_info_core['union_types']
 
-    @property
-    def include_path_for_union_types(self):
-        return 'bindings/modules/v8/UnionTypesModules.h'
+    def include_path_for_union_types(self, name):
+        core_union_type_names = [union_type.name for union_type
+                                 in self._component_info_core['union_types']]
+        if name in core_union_type_names:
+            return 'bindings/core/v8/%s.h' % name
+        return 'bindings/modules/v8/%s.h' % name
 
     @property
     def specifier_for_export(self):
@@ -294,6 +297,12 @@ def write_file(new_text, destination_filename, only_if_changed):
     destination_dirname = os.path.dirname(destination_filename)
     if not os.path.exists(destination_dirname):
         os.makedirs(destination_dirname)
+    # Workaround for http://crbug.com/611437
+    # TODO(bashi): Remove this hack once we resolve too-long generated file
+    # names.
+    if platform.system() == 'Windows':
+        # http://stackoverflow.com/questions/14075465
+        destination_filename = '\\\\?\\' + destination_filename
     with open(destination_filename, 'w') as destination_file:
         destination_file.write(new_text)