Switched sync protobufs to use "heavy" protobufs.

chrome/chrome.gyp

 # Copyright (c) 2010 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.
 {
   'variables': {
     'chromium_code': 1,
 
     'variables': {
       'version_py_path': 'tools/build/version.py',
       'version_path': 'VERSION',
@@ skipping 935 matching lines @@
       ],
       'defines' : [
         'SYNC_ENGINE_VERSION_STRING="Unknown"',
         '_CRT_SECURE_NO_WARNINGS',
         '_USE_32BIT_TIME_T',
       ],
       'dependencies': [
         '../skia/skia.gyp:skia',
         '../third_party/libjingle/libjingle.gyp:libjingle',
         'browser/sync/protocol/sync_proto.gyp:sync_proto_cpp',
-        '../third_party/protobuf2/protobuf.gyp:protobuf_lite#target',
+        # TODO(akalin): Change back to protobuf_lite once it supports
+        # preserving unknown fields.
+        '../third_party/protobuf2/protobuf.gyp:protobuf#target',
       ],
       'conditions': [
         ['OS=="win"', {
           'sources' : [
             'browser/sync/util/data_encryption.cc',
             'browser/sync/util/data_encryption.h',
           ],
         }],
         ['OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="solaris"', {
           'dependencies': [
@@ skipping 869 matching lines @@
       }],  # targets
     }],  # OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="solaris"
   ],  # 'conditions'
 }
 
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