Add support for generating jars from protos and add cacheinvalidation_java.

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': {
@@ skipping 52 matching lines @@
                   ],
                   'message': 'Generating the C++ protocol buffers compiler',
                 },
               ],
             },
           ],
         }],
         ['OS=="android"', {
           'targets': [
             {
-              'target_name': 'protobuf_lite_java',
+              'target_name': 'protobuf_lite_javalib',
               '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',
@@ skipping 382 matching lines @@
           'toolsets': ['host', 'target'],
         },
         {
           'target_name': 'py_proto',
           'type': 'none',
         },
       ],
     }],
   ],
 }