[Sync] Add bookmark move tests.

sync/test/fake_server/android/fake_server_helper_android.h

Index: sync/test/fake_server/android/fake_server_helper_android.h
diff --git a/sync/test/fake_server/android/fake_server_helper_android.h b/sync/test/fake_server/android/fake_server_helper_android.h
index 225a235161d3e79be1756949e70aeef8e12ba1bd..cf2ca0a0cfa968d85f5aeeb485a5f869b5980e41 100644
--- a/sync/test/fake_server/android/fake_server_helper_android.h
+++ b/sync/test/fake_server/android/fake_server_helper_android.h
@@ -48,6 +48,13 @@ class FakeServerHelperAndroid {
                           jlong fake_server,
                           jobjectArray url_array);
 
+  // Return the entities for |model_type_string| on |fake_server|.
+  base::android::ScopedJavaLocalRef<jobjectArray> GetSyncEntitiesByModelType(
+      JNIEnv* env,
+      jobject obj,
+      jlong fake_server,
+      jstring model_type_string);
+
   // Injects a UniqueClientEntity into |fake_server|.
   void InjectUniqueClientEntity(JNIEnv* env,
                                 jobject obj,
@@ -110,6 +117,10 @@ class FakeServerHelperAndroid {
  private:
   virtual ~FakeServerHelperAndroid();
 
+  // Converts |proto| into a jbyteArray.
+  jbyteArray ProtoToJbyteArray(JNIEnv* env,
+                               const google::protobuf::MessageLite& proto);
+
   // Deserializes |serialized_entity_specifics| into |entity_specifics|.
   void DeserializeEntitySpecifics(JNIEnv* env,
                                   jbyteArray serialized_entity_specifics,