[Extensions] Update generated code to support move operations

tools/json_schema_compiler/h_generator.py

Index: tools/json_schema_compiler/h_generator.py
diff --git a/tools/json_schema_compiler/h_generator.py b/tools/json_schema_compiler/h_generator.py
index 173e549e187a1374a9a0ed62cbf8a5f0d62d2bab..cb9c576dd8802bd67067b1c975fbfa1701c2bec3 100644
--- a/tools/json_schema_compiler/h_generator.py
+++ b/tools/json_schema_compiler/h_generator.py
@@ -228,6 +228,10 @@ class _Generator(object):
           .Append('%(classname)s();')
           .Append('~%(classname)s();')
       )
+      if 'use_movable_types' in type_.namespace.compiler_options:
+        (c.Append('%(classname)s(%(classname)s&& other);')
+          .Append('%(classname)s& operator=(%(classname)s&& other);')
+        )
       if type_.origin.from_json:
         (c.Append()
           .Comment('Populates a %s object from a base::Value. Returns'