Java: Implements union generation.

mojo/public/tools/bindings/mojom.gni

 # Copyright 2014 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.
 
 import("../../mojo_sdk.gni")
 
 # Generate C++/JavaScript/Java/Python/Dart/Go source files from mojom files. The
 # output files will go under the generated file directory tree with the same
 # path as each input file.
 #
@@ skipping 73 matching lines @@
       "$generator_root/generators/dart_templates/interface_definition.tmpl",
       "$generator_root/generators/dart_templates/module.lib.tmpl",
       "$generator_root/generators/dart_templates/module_definition.tmpl",
       "$generator_root/generators/dart_templates/struct_definition.tmpl",
       "$generator_root/generators/go_templates/enum.tmpl",
       "$generator_root/generators/go_templates/interface.tmpl",
       "$generator_root/generators/go_templates/source.tmpl",
       "$generator_root/generators/go_templates/struct.tmpl",
       "$generator_root/generators/java_templates/constant_definition.tmpl",
       "$generator_root/generators/java_templates/constants.java.tmpl",
+      "$generator_root/generators/java_templates/data_types_definition.tmpl",
+      "$generator_root/generators/java_templates/enum_definition.tmpl",
       "$generator_root/generators/java_templates/enum.java.tmpl",
-      "$generator_root/generators/java_templates/enum_definition.tmpl",
       "$generator_root/generators/java_templates/header.java.tmpl",
-      "$generator_root/generators/java_templates/interface.java.tmpl",
       "$generator_root/generators/java_templates/interface_definition.tmpl",
       "$generator_root/generators/java_templates/interface_internal.java.tmpl",
+      "$generator_root/generators/java_templates/interface.java.tmpl",
       "$generator_root/generators/java_templates/struct.java.tmpl",
-      "$generator_root/generators/java_templates/struct_definition.tmpl",
+      "$generator_root/generators/java_templates/union.java.tmpl",
       "$generator_root/generators/js_templates/enum_definition.tmpl",
       "$generator_root/generators/js_templates/interface_definition.tmpl",
       "$generator_root/generators/js_templates/module.amd.tmpl",
       "$generator_root/generators/js_templates/module_definition.tmpl",
       "$generator_root/generators/js_templates/struct_definition.tmpl",
       "$generator_root/generators/python_templates/module.py.tmpl",
       "$generator_root/generators/python_templates/module_macros.tmpl",
       "$generator_root/generators/mojom_cpp_generator.py",
       "$generator_root/generators/mojom_dart_generator.py",
       "$generator_root/generators/mojom_go_generator.py",
@@ skipping 295 matching lines @@
         # //mojo/something:something and we can append "_java" to get the java
         # dependency name.
         full_name = get_label_info(d, "label_no_toolchain")
         deps += [ "${full_name}_java" ]
       }
 
       srcjar_deps = [ ":$java_srcjar_target_name" ]
     }
   }
 }