Mojo C++ Bindings: Make hashing of typemapped enums optional

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

 # Copyright 2013 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.
 
 """Generates C++ source files from a mojom.Module."""
 
 import mojom.generate.generator as generator
 import mojom.generate.module as mojom
 import mojom.generate.pack as pack
 from mojom.generate.template_expander import UseJinja
@@ skipping 178 matching lines @@
     if kind.spec in checked:
       return True
     checked.add(kind.spec)
     if mojom.IsNullableKind(kind):
       return False
     elif mojom.IsStructKind(kind):
       if (IsTypemappedKind(kind) and
           not _current_typemap[GetFullMojomNameForKind(kind)]["hashable"]):
         return False
       return all(Check(field.kind) for field in kind.fields)
+    elif mojom.IsEnumKind(kind):
+      if (IsTypemappedKind(kind) and
+          not _current_typemap[GetFullMojomNameForKind(kind)]["hashable"]):
+        return False
+      return True
     elif mojom.IsUnionKind(kind):
       return all(Check(field.kind) for field in kind.fields)
     elif mojom.IsAnyHandleKind(kind):
       return False
     elif mojom.IsAnyInterfaceKind(kind):
       return False
     # TODO(tibell): Arrays and maps could be made hashable. We just don't have a
     # use case yet.
     elif mojom.IsArrayKind(kind):
       return False
@@ skipping 457 matching lines @@
       global _use_new_wrapper_types
       _use_new_wrapper_types = self.use_new_wrapper_types
       global _variant
       _variant = self.variant
       suffix = "-%s" % self.variant if self.variant else ""
       self.Write(self.GenerateModuleHeader(),
                  self.MatchMojomFilePath("%s%s.h" % (self.module.name, suffix)))
       self.Write(
           self.GenerateModuleSource(),
           self.MatchMojomFilePath("%s%s.cc" % (self.module.name, suffix)))