autotest: null out self-cancelleing afe migrations 110-113

BUG=chromium:719628
TEST=None

Change-Id: Ia30c98654688482e0d4a0e3a19d9025cb24f216e
Reviewed-on: https://chromium-review.googlesource.com/498711
Commit-Ready: Aviv Keshet <akeshet@chromium.org>
Tested-by: Aviv Keshet <akeshet@chromium.org>
Reviewed-by: Allen Li <ayatane@chromium.org>
Reviewed-by: Dan Shi <dshi@google.com>
diff --git a/frontend/migrations/110_remove_synch_id.py b/frontend/migrations/110_remove_synch_id.py
index 8dc5e18..d3a6852 100644
--- a/frontend/migrations/110_remove_synch_id.py
+++ b/frontend/migrations/110_remove_synch_id.py
@@ -1,7 +1,5 @@
-UP_SQL = """
-ALTER TABLE `afe_hosts` DROP COLUMN `synch_id`;
-"""
+# This migration has been nulled out, see crbug.com/719628 or the backup
+# ".ignore" migration files in this directory.
+UP_SQL = "SELECT 1;"
 
-DOWN_SQL = """
-ALTER TABLE `afe_hosts` ADD `synch_id` int(11) default NULL;
-"""
+DOWN_SQL = "SELECT 1;"
diff --git a/frontend/migrations/111_add_back_synch_id_temporarily.py b/frontend/migrations/111_add_back_synch_id_temporarily.py
index 839b8d2..d3a6852 100644
--- a/frontend/migrations/111_add_back_synch_id_temporarily.py
+++ b/frontend/migrations/111_add_back_synch_id_temporarily.py
@@ -1,7 +1,5 @@
-UP_SQL = """
-ALTER TABLE `afe_hosts` ADD `synch_id` int(11) default NULL;
-"""
+# This migration has been nulled out, see crbug.com/719628 or the backup
+# ".ignore" migration files in this directory.
+UP_SQL = "SELECT 1;"
 
-DOWN_SQL = """
-ALTER TABLE `afe_hosts` DROP COLUMN `synch_id`;
-"""
+DOWN_SQL = "SELECT 1;"
diff --git a/frontend/migrations/112_remove_synch_id.py b/frontend/migrations/112_remove_synch_id.py
index 8dc5e18..d3a6852 100644
--- a/frontend/migrations/112_remove_synch_id.py
+++ b/frontend/migrations/112_remove_synch_id.py
@@ -1,7 +1,5 @@
-UP_SQL = """
-ALTER TABLE `afe_hosts` DROP COLUMN `synch_id`;
-"""
+# This migration has been nulled out, see crbug.com/719628 or the backup
+# ".ignore" migration files in this directory.
+UP_SQL = "SELECT 1;"
 
-DOWN_SQL = """
-ALTER TABLE `afe_hosts` ADD `synch_id` int(11) default NULL;
-"""
+DOWN_SQL = "SELECT 1;"
diff --git a/frontend/migrations/113_add_back_sync_id_temporarily.py b/frontend/migrations/113_add_back_sync_id_temporarily.py
index 839b8d2..d3a6852 100644
--- a/frontend/migrations/113_add_back_sync_id_temporarily.py
+++ b/frontend/migrations/113_add_back_sync_id_temporarily.py
@@ -1,7 +1,5 @@
-UP_SQL = """
-ALTER TABLE `afe_hosts` ADD `synch_id` int(11) default NULL;
-"""
+# This migration has been nulled out, see crbug.com/719628 or the backup
+# ".ignore" migration files in this directory.
+UP_SQL = "SELECT 1;"
 
-DOWN_SQL = """
-ALTER TABLE `afe_hosts` DROP COLUMN `synch_id`;
-"""
+DOWN_SQL = "SELECT 1;"
diff --git a/frontend/migrations/old_110_remove_synch_id.ignore b/frontend/migrations/old_110_remove_synch_id.ignore
new file mode 100644
index 0000000..8dc5e18
--- /dev/null
+++ b/frontend/migrations/old_110_remove_synch_id.ignore
@@ -0,0 +1,7 @@
+UP_SQL = """
+ALTER TABLE `afe_hosts` DROP COLUMN `synch_id`;
+"""
+
+DOWN_SQL = """
+ALTER TABLE `afe_hosts` ADD `synch_id` int(11) default NULL;
+"""
diff --git a/frontend/migrations/old_111_add_back_synch_id_temporarily.ignore b/frontend/migrations/old_111_add_back_synch_id_temporarily.ignore
new file mode 100644
index 0000000..839b8d2
--- /dev/null
+++ b/frontend/migrations/old_111_add_back_synch_id_temporarily.ignore
@@ -0,0 +1,7 @@
+UP_SQL = """
+ALTER TABLE `afe_hosts` ADD `synch_id` int(11) default NULL;
+"""
+
+DOWN_SQL = """
+ALTER TABLE `afe_hosts` DROP COLUMN `synch_id`;
+"""