Bring up minimal sync and sync unittest targets on iOS.

The sync implementation is not yet complete (e.g., there is not yet an
invalidator_factory implementation on iOS), but enough of the structure is in
place to allow for the sync target to build and a reduced set of unittests to
run successfully.


Review URL: https://chromiumcodereview.appspot.com/11360194

git-svn-id: http://src.chromium.org/svn/trunk/src/build@167485 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

all.gyp

@@ -17,6 +17,7 @@
         '../net/net.gyp:*',
         '../sdch/sdch.gyp:*',
         '../sql/sql.gyp:*',
+        '../sync/sync.gyp:*',
         '../testing/gmock.gyp:*',
         '../testing/gtest.gyp:*',
         '../third_party/bzip2/bzip2.gyp:*',
@@ -42,7 +43,6 @@
             '../ppapi/ppapi_internal.gyp:*',
             '../printing/printing.gyp:*',
             '../skia/skia.gyp:*',
-            '../sync/sync.gyp:*',
             '../third_party/cacheinvalidation/cacheinvalidation.gyp:*',
             '../third_party/cld/cld.gyp:*',
             '../third_party/codesighs/codesighs.gyp:*',