Check in protobuf java code and generate lite jar.

third_party/protobuf/protobuf.gyp

 # Copyright (c) 2012 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.
 
 {
   'conditions': [
     ['use_system_protobuf==0', {
       'conditions': [
         ['OS!="win"', {
           'variables': {
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                   'action': [
                     '<@(ninja_cmd)',
                     'protoc',
                   ],
                   'message': 'Generating the C++ protocol buffers compiler',
                 },
               ],
             },
           ],
         }],
+        ['OS=="android"', {
+          'targets': [
+            {
+              'target_name': 'protobuf_lite_java',
+              'type' : 'none',
+              'dependencies': [
+                'protoc#host',
+              ],
+              'variables': {
+                'script_descriptors': './protobuf_lite_java_descriptor_proto.py',
+                'script_pom': './protobuf_lite_java_parse_pom.py',
+                'protoc': '<(PRODUCT_DIR)/<(EXECUTABLE_PREFIX)protoc<(EXECUTABLE_SUFFIX)',
+                # Variables needed by java.gypi below.
+                'java_out_dir': '<(PRODUCT_DIR)/java_proto/protobuf_lite_java_descriptor_proto',
+                'generated_src_dirs': ['<(java_out_dir)'],
+                'package_name': '<(_target_name)',
+                'java_in_dir': 'java',
+                'maven_pom': '<(java_in_dir)/pom.xml',
+                'javac_includes': ['<!@(<(script_pom) <(maven_pom))'],
+              },
+              'actions': [
+                {
+                  'action_name': 'protobuf_lite_java_gen_descriptor_proto',
+                  'inputs': [
+                    '<(script_descriptors)',
+                    '<(protoc)',
+                    'src/google/protobuf/descriptor.proto',
+                  ],
+                  'outputs': [
+                    '<(java_out_dir)/com/google/protobuf/DescriptorProtos.java',
+                  ],
+                  'action': [
+                    '<(script_descriptors)',
+                    '<(protoc)',
+                    '<(java_out_dir)',
+                    'src',
+                    'src/google/protobuf/descriptor.proto',
+                  ],
+                  'message': 'Generating descriptor protos for Java',
+                },
+              ],
+              # Now that we have generated DescriptorProtos.java, build jar.
+              'includes': ['../../build/java.gypi'],
+            },
+          ]
+        }],
       ],
       'targets': [
         # The "lite" lib is about 1/7th the size of the heavy lib,
         # but it doesn't support some of the more exotic features of
         # protobufs, like reflection.  To generate C++ code that can link
         # against the lite version of the library, add the option line:
         #
         #   option optimize_for = LITE_RUNTIME;
         #
         # to your .proto file.
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           'toolsets': ['host', 'target'],
         },
         {
           'target_name': 'py_proto',
           'type': 'none',
         },
       ],
     }],
   ],
 }