Sync: add an Android test for injecting a tombstone
This CL adds testDownloadDeletedBookmark. This test case ensures the
Sync on Android processes a bookmark tombstone correctly. This test also
serves as an example for future tests of this type (downloading a
deleted entity).
This CL also adds the necessary infrastructure for creating this test:
1) JNI binding for injecting the tombstone.
2) Small change to the recently-committed SyncTestUtil.getLocalData
method that makes it use server-side entity IDs.
BUG=365774
Review URL: https://codereview.chromium.org/
1149013002
Cr-Commit-Position: refs/heads/master@{#331020}