Convert snakecase enum names to camelcase when stringified.

tools/json_schema_compiler/idl_schema.py

Index: tools/json_schema_compiler/idl_schema.py
diff --git a/tools/json_schema_compiler/idl_schema.py b/tools/json_schema_compiler/idl_schema.py
index 991b1c6bb9d060ce44ca842555b345fd2dc509e6..5393e4d699774c79fa605bc76c080de842312159 100644
--- a/tools/json_schema_compiler/idl_schema.py
+++ b/tools/json_schema_compiler/idl_schema.py
@@ -407,7 +407,7 @@ class IDLSchema(object):
     internal = False
     description = None
     platforms = None
-    compiler_options = None
+    compiler_options = {}
     deprecated = None
     for node in self.idl:
       if node.cls == 'Namespace':
@@ -418,7 +418,7 @@ class IDLSchema(object):
           description = ''
         namespace = Namespace(node, description, nodoc, internal,
                               platforms=platforms,
-                              compiler_options=compiler_options,
+                              compiler_options=compiler_options or None,
                               deprecated=deprecated)
         namespaces.append(namespace.process())
         nodoc = False
@@ -437,7 +437,9 @@ class IDLSchema(object):
         elif node.name == 'platforms':
           platforms = list(node.value)
         elif node.name == 'implemented_in':
-          compiler_options = {'implemented_in': node.value}
+          compiler_options['implemented_in'] = node.value
+        elif node.name == 'camel_case_enum_to_string':
+          compiler_options['camel_case_enum_to_string'] = node.value
         elif node.name == 'deprecated':
           deprecated = str(node.value)
         else: