Generate java bindings for constants.

mojo/public/tools/bindings/mojom_bindings_generator.gypi

 # Copyright 2013 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.
 
 {
   'rules': [
     {
-      'rule_name': 'Generate C++ source files from mojom files',
+      'rule_name': 'Generate C++, JS and Java source files from mojom files',
       'extension': 'mojom',
       'variables': {
         'mojom_base_output_dir':
              '<!(python <(DEPTH)/build/inverse_depth.py <(DEPTH))',
         'mojom_bindings_generator':
             '<(DEPTH)/mojo/public/tools/bindings/mojom_bindings_generator.py',
+        'java_out_dir': '<(PRODUCT_DIR)/java_mojo/<(_target_name)/src',
       },
       'inputs': [
         '<(mojom_bindings_generator)',
         '<(DEPTH)/mojo/public/tools/bindings/generators/cpp_templates/enum_declaration.tmpl',
         '<(DEPTH)/mojo/public/tools/bindings/generators/cpp_templates/interface_declaration.tmpl',
         '<(DEPTH)/mojo/public/tools/bindings/generators/cpp_templates/interface_definition.tmpl',
         '<(DEPTH)/mojo/public/tools/bindings/generators/cpp_templates/interface_macros.tmpl',
         '<(DEPTH)/mojo/public/tools/bindings/generators/cpp_templates/interface_proxy_declaration.tmpl',
         '<(DEPTH)/mojo/public/tools/bindings/generators/cpp_templates/interface_request_validator_declaration.tmpl',
         '<(DEPTH)/mojo/public/tools/bindings/generators/cpp_templates/interface_response_validator_declaration.tmpl',
         '<(DEPTH)/mojo/public/tools/bindings/generators/cpp_templates/interface_stub_declaration.tmpl',
         '<(DEPTH)/mojo/public/tools/bindings/generators/cpp_templates/module.cc.tmpl',
         '<(DEPTH)/mojo/public/tools/bindings/generators/cpp_templates/module.h.tmpl',
         '<(DEPTH)/mojo/public/tools/bindings/generators/cpp_templates/module-internal.h.tmpl',
         '<(DEPTH)/mojo/public/tools/bindings/generators/cpp_templates/params_definition.tmpl',
         '<(DEPTH)/mojo/public/tools/bindings/generators/cpp_templates/struct_declaration.tmpl',
         '<(DEPTH)/mojo/public/tools/bindings/generators/cpp_templates/struct_definition.tmpl',
         '<(DEPTH)/mojo/public/tools/bindings/generators/cpp_templates/struct_macros.tmpl',
         '<(DEPTH)/mojo/public/tools/bindings/generators/cpp_templates/struct_serialization_declaration.tmpl',
         '<(DEPTH)/mojo/public/tools/bindings/generators/cpp_templates/struct_serialization_definition.tmpl',
         '<(DEPTH)/mojo/public/tools/bindings/generators/cpp_templates/wrapper_class_declaration.tmpl',
         '<(DEPTH)/mojo/public/tools/bindings/generators/cpp_templates/wrapper_class_definition.tmpl',
+        '<(DEPTH)/mojo/public/tools/bindings/generators/java_templates/constant_definition.tmpl',
+        '<(DEPTH)/mojo/public/tools/bindings/generators/java_templates/constants.java.tmpl',
+        '<(DEPTH)/mojo/public/tools/bindings/generators/java_templates/header.java.tmpl',
+        '<(DEPTH)/mojo/public/tools/bindings/generators/java_templates/java_macros.tmpl',
         '<(DEPTH)/mojo/public/tools/bindings/generators/js_templates/enum_definition.tmpl',
         '<(DEPTH)/mojo/public/tools/bindings/generators/js_templates/interface_definition.tmpl',
         '<(DEPTH)/mojo/public/tools/bindings/generators/js_templates/module.js.tmpl',
         '<(DEPTH)/mojo/public/tools/bindings/generators/js_templates/struct_definition.tmpl',
         '<(DEPTH)/mojo/public/tools/bindings/generators/mojom_cpp_generator.py',
+        '<(DEPTH)/mojo/public/tools/bindings/generators/mojom_java_generator.py',
         '<(DEPTH)/mojo/public/tools/bindings/generators/mojom_js_generator.py',
         '<(DEPTH)/mojo/public/tools/bindings/pylib/mojom/__init__.py',
         '<(DEPTH)/mojo/public/tools/bindings/pylib/mojom/error.py',
         '<(DEPTH)/mojo/public/tools/bindings/pylib/mojom/generate/__init__.py',
         '<(DEPTH)/mojo/public/tools/bindings/pylib/mojom/generate/data.py',
         '<(DEPTH)/mojo/public/tools/bindings/pylib/mojom/generate/generator.py',
         '<(DEPTH)/mojo/public/tools/bindings/pylib/mojom/generate/module.py',
         '<(DEPTH)/mojo/public/tools/bindings/pylib/mojom/generate/pack.py',
         '<(DEPTH)/mojo/public/tools/bindings/pylib/mojom/generate/template_expander.py',
         '<(DEPTH)/mojo/public/tools/bindings/pylib/mojom/parse/__init__.py',
         '<(DEPTH)/mojo/public/tools/bindings/pylib/mojom/parse/ast.py',
         '<(DEPTH)/mojo/public/tools/bindings/pylib/mojom/parse/lexer.py',
         '<(DEPTH)/mojo/public/tools/bindings/pylib/mojom/parse/parser.py',
         '<(DEPTH)/mojo/public/tools/bindings/pylib/mojom/parse/translate.py',
       ],
       'outputs': [
         '<(SHARED_INTERMEDIATE_DIR)/<(mojom_base_output_dir)/<(RULE_INPUT_DIRNAME)/<(RULE_INPUT_ROOT).mojom.cc',
         '<(SHARED_INTERMEDIATE_DIR)/<(mojom_base_output_dir)/<(RULE_INPUT_DIRNAME)/<(RULE_INPUT_ROOT).mojom.h',
         '<(SHARED_INTERMEDIATE_DIR)/<(mojom_base_output_dir)/<(RULE_INPUT_DIRNAME)/<(RULE_INPUT_ROOT).mojom.js',
         '<(SHARED_INTERMEDIATE_DIR)/<(mojom_base_output_dir)/<(RULE_INPUT_DIRNAME)/<(RULE_INPUT_ROOT).mojom-internal.h',
       ],
       'action': [
         'python', '<@(mojom_bindings_generator)',
         './<(RULE_INPUT_DIRNAME)/<(RULE_INPUT_ROOT).mojom',
         '--use_chromium_bundled_pylibs',
         '-d', '<(DEPTH)',
         '-o', '<(SHARED_INTERMEDIATE_DIR)/<(mojom_base_output_dir)/<(RULE_INPUT_DIRNAME)',
+        '--java_output_directory=<(java_out_dir)',
       ],
       'message': 'Generating Mojo bindings from <(RULE_INPUT_DIRNAME)/<(RULE_INPUT_ROOT).mojom',
       'process_outputs_as_sources': 1,
     }
   ],
   'include_dirs': [
     '<(DEPTH)',
     '<(SHARED_INTERMEDIATE_DIR)',
   ],
   'direct_dependent_settings': {
     'include_dirs': [
       '<(DEPTH)',
       '<(SHARED_INTERMEDIATE_DIR)',
     ],
+    'variables': {
+      'generated_src_dirs': [
+        '<(PRODUCT_DIR)/java_mojo/<(_target_name)/src',
+      ],
+    },
   },
   'hard_dependency': 1,
 }