Mojo: Support enums as map keys in WTF

mojo/public/tools/bindings/generators/cpp_templates/module.h.tmpl

Index: mojo/public/tools/bindings/generators/cpp_templates/module.h.tmpl
diff --git a/mojo/public/tools/bindings/generators/cpp_templates/module.h.tmpl b/mojo/public/tools/bindings/generators/cpp_templates/module.h.tmpl
index 9306d2f816d01b260f5203732f517b3d5b06f799..b93507c2774273a5d2b951d4b99dd0aac4c44f5b 100644
--- a/mojo/public/tools/bindings/generators/cpp_templates/module.h.tmpl
+++ b/mojo/public/tools/bindings/generators/cpp_templates/module.h.tmpl
@@ -86,6 +86,33 @@ namespace {{variant}} {
 #include "{{export_header}}"
 {%- endif %}
 
+{#--- WTF enum hashing #}
+{%- from "enum_macros.tmpl" import enum_hash_blink%}
+{%- if for_blink %}
+{#-   Top-level #}
+{%-   for enum in enums %}

[yzshen1, 2017/02/28 18:48:34]

you could use "all_enums" for all enums at top level / in structs / in
interfaces.

For example:
https://cs.chromium.org/chromium/src/mojo/public/tools/bindings/generators/cp...

[tibell, 2017/03/01 23:08:39]

Done.

+{%-     if not enum|is_native_only_kind %}
+{{enum_hash_blink(enum)}}
+{%-     endif %}
+{%-   endfor %}
+{#-   Inside structs #}
+{%-   for struct in structs %}
+{%-     for enum in struct.enums %}
+{%-       if not enum|is_native_only_kind %}
+{{enum_hash_blink(enum)}}
+{%-       endif %}
+{%-     endfor %}
+{%-   endfor %}
+{#-   Inside interfaces #}
+{%-   for iface in interfaces %}
+{%-     for enum in iface.enums %}
+{%-       if not enum|is_native_only_kind %}
+{{enum_hash_blink(enum)}}
+{%-       endif %}
+{%-     endfor %}
+{%-   endfor %}
+{%- endif %}
+
 {{namespace_begin()}}
 
 {#--- Enums #}