Revert (3 of 4) 30154 - Fix build bustage by adding dependency back on...

Revert (3 of 4) 30154 - Fix build bustage by adding dependency back on sync_proto from sync_unit_tests.

TBR=nick

Review URL: http://codereview.chromium.org/334038

TBR=tim@chromium.org
Review URL: http://codereview.chromium.org/333039

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@30161 0039d316-1c4b-4281-b951-d872f2087c98

chrome/chrome.gyp

@@ -6767,7 +6767,6 @@
             '../testing/gtest.gyp:gtest',
             '../third_party/libjingle/libjingle.gyp:libjingle',
             'syncapi',
-            'sync_proto',
             'test_support_unit',
           ],
           'conditions': [