[mojo] Add typemap and variant support to generators

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

Index: mojo/public/tools/bindings/generators/mojom_java_generator.py
diff --git a/mojo/public/tools/bindings/generators/mojom_java_generator.py b/mojo/public/tools/bindings/generators/mojom_java_generator.py
index 36110d47208673e6f0011c2e155bbc883daa52ed..3c7fe17e102e3b13dbc664c43d56fa12fefbef69 100644
--- a/mojo/public/tools/bindings/generators/mojom_java_generator.py
+++ b/mojo/public/tools/bindings/generators/mojom_java_generator.py
@@ -504,6 +504,10 @@ class Generator(generator.Generator):
                  '%s.java' % GetConstantsMainEntityName(self.module))
 
   def GenerateFiles(self, unparsed_args):
+    # TODO(rockot): Support variant output for Java.
+    if self.variant:
+      return

[yzshen1, 2015/12/15 00:09:10]

Please output some message or assert, so it is easier for people to find out the
reason if they don't get the generated files.

+
     parser = argparse.ArgumentParser()
     parser.add_argument('--java_output_directory', dest='java_output_directory')
     args = parser.parse_args(unparsed_args)