Update mojo sdk to rev 8af2ccff2eee4bfca1043015abee30482a030b30

third_party/mojo/src/mojo/public/tools/bindings/generators/mojom_cpp_generator.py

Index: third_party/mojo/src/mojo/public/tools/bindings/generators/mojom_cpp_generator.py
diff --git a/third_party/mojo/src/mojo/public/tools/bindings/generators/mojom_cpp_generator.py b/third_party/mojo/src/mojo/public/tools/bindings/generators/mojom_cpp_generator.py
index 34bba30e69be34948f5bd666dc76fbfc94388e61..8b7e2197c08b35824826ac7498b79cd43c82ac03 100644
--- a/third_party/mojo/src/mojo/public/tools/bindings/generators/mojom_cpp_generator.py
+++ b/third_party/mojo/src/mojo/public/tools/bindings/generators/mojom_cpp_generator.py
@@ -283,6 +283,9 @@ def ShouldInlineStruct(struct):
       return False
   return True
 
+def ShouldInlineUnion(union):
+  return not any(mojom.IsMoveOnlyKind(field.kind) for field in union.fields)
+
 def GetArrayValidateParams(kind):
   if (not mojom.IsArrayKind(kind) and not mojom.IsMapKind(kind) and
       not mojom.IsStringKind(kind)):
@@ -314,8 +317,6 @@ def GetMapValidateParams(value_kind):
       'true' if element_is_nullable else 'false',
       GetArrayValidateParams(value_kind))
 
-_HEADER_SIZE = 8
-
 class Generator(generator.Generator):
 
   cpp_filters = {
@@ -334,6 +335,7 @@ class Generator(generator.Generator):
     "get_pad": pack.GetPad,
     "has_callbacks": mojom.HasCallbacks,
     "should_inline": ShouldInlineStruct,
+    "should_inline_union": ShouldInlineUnion,
     "is_array_kind": mojom.IsArrayKind,
     "is_cloneable_kind": mojom.IsCloneableKind,
     "is_enum_kind": mojom.IsEnumKind,
@@ -347,11 +349,13 @@ class Generator(generator.Generator):
     "is_string_kind": mojom.IsStringKind,
     "is_struct_kind": mojom.IsStructKind,
     "is_struct_with_handles": IsStructWithHandles,
+    "is_union_kind": mojom.IsUnionKind,
     "struct_size": lambda ps: ps.GetTotalSize() + _HEADER_SIZE,
     "struct_from_method": generator.GetStructFromMethod,
     "response_struct_from_method": generator.GetResponseStructFromMethod,
     "stylize_method": generator.StudlyCapsToCamel,
     "to_all_caps": generator.CamelCaseToAllCaps,
+    "under_to_camel": generator.UnderToCamel,
   }
 
   def GetJinjaExports(self):
@@ -363,6 +367,7 @@ class Generator(generator.Generator):
       "kinds": self.module.kinds,
       "enums": self.module.enums,
       "structs": self.GetStructs(),
+      "unions": self.module.unions,
       "interfaces": self.module.interfaces,
     }