Generate separate files for union type containers

third_party/WebKit/Source/bindings/scripts/v8_union.py

Index: third_party/WebKit/Source/bindings/scripts/v8_union.py
diff --git a/third_party/WebKit/Source/bindings/scripts/v8_union.py b/third_party/WebKit/Source/bindings/scripts/v8_union.py
index fa22cdbac8cdabb86993dad1181c470e81ae327e..173aec2a60adb6fe8c38e781cbd538df714d51aa 100644
--- a/third_party/WebKit/Source/bindings/scripts/v8_union.py
+++ b/third_party/WebKit/Source/bindings/scripts/v8_union.py
@@ -2,6 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import v8_types
 import v8_utilities
 
 
@@ -59,6 +60,13 @@ def union_context(union_types, interfaces_info):
 
 
 def container_context(union_type, interfaces_info):
+    cpp_includes.clear()
+    cpp_includes.update(set([
+        'bindings/core/v8/ToV8.h',
+    ]))
+    header_forward_decls.clear()
+    header_includes.clear()
+    header_includes.update(UNION_H_INCLUDES)
     members = []
 
     # These variables refer to member contexts if the given union type has
@@ -114,13 +122,17 @@ def container_context(union_type, interfaces_info):
     if dictionary_type and nullable_members == 1:
         raise Exception('%s has a dictionary and a nullable member' % union_type.name)
 
+    cpp_class = union_type.cpp_type
     return {
         'array_buffer_type': array_buffer_type,
         'array_buffer_view_type': array_buffer_view_type,
         'array_or_sequence_type': array_or_sequence_type,
         'boolean_type': boolean_type,
-        'cpp_class': union_type.cpp_type,
+        'cpp_class': cpp_class,
+        'cpp_includes': sorted(cpp_includes - UNION_CPP_INCLUDES_BLACKLIST),
         'dictionary_type': dictionary_type,
+        'header_includes': sorted(header_includes - UNION_CPP_INCLUDES_BLACKLIST),
+        'header_forward_decls': sorted(header_forward_decls),
         'includes_nullable_type': union_type.includes_nullable_type,
         'interface_types': interface_types,
         'members': members,
@@ -128,6 +140,7 @@ def container_context(union_type, interfaces_info):
         'object_type': object_type,
         'string_type': string_type,
         'type_string': str(union_type),
+        'v8_class': v8_types.v8_type(cpp_class),
     }