[Sync] Add auto-generated ModelType in Java.

sync/BUILD.gn

 # 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("//build/config/features.gni")
 import("//testing/test.gni")
 
 component("sync") {
   public_deps = [
     ":sync_core",
@@ skipping 407 matching lines @@
     "//crypto",
     "//google_apis",
     "//net",
     "//sql",
     "//third_party/leveldatabase",
     "//third_party/zlib",
     "//url",
     "//sync/protocol",
   ]
 
+  if (is_android) {
+    deps += [ "//sync/android:jni_headers" ]
+    sources += [
+      "android/model_type_helper.cc",
+      "android/model_type_helper.h",
+      "android/sync_jni_registrar.cc",
+      "android/sync_jni_registrar.h",
+    ]
+  }
+
   if (is_chromeos) {
     # Required by get_session_name.cc on Chrome OS.
     deps += [ "//chromeos" ]
   }
 
   if (is_mac) {
     libs = [
       # Required by get_session_name_mac.mm on Mac.
       "SystemConfiguration.framework",
     ]
@@ skipping 371 matching lines @@
       ":fake_server_jni",
       ":sync_core",
       ":test_support_sync_fake_server",
       "//base",
       "//sync/protocol:protocol",
       "//testing/gtest",
       "//url:url",
     ]
   }
 }