Merge branch 'undo-revert-of-4892' into 'master'

Revert "Revert "Merge branch '18193-developers-can-merge' into 'master'""

## What does this MR do?

Reverts the revert of !4892 which lacked an EE MR at the time. This has been done in gitlab-org/gitlab-ee!564.

## What are the relevant issue numbers?

Closes #19872.

See merge request !5310

3 files changed, 22 insertions, 4 deletions

diff --git a/db/migrate/20160519203051_add_developers_can_merge_to_protected_branches.rb b/db/migrate/20160519203051_add_developers_can_merge_to_protected_branches.rb
new file mode 100644
index 00000000000..15ad8e8bcbb
--- /dev/null
+++ b/db/migrate/20160519203051_add_developers_can_merge_to_protected_branches.rb
@@ -0,0 +1,9 @@
+class AddDevelopersCanMergeToProtectedBranches < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  disable_ddl_transaction!
+
+  def change
+    add_column_with_default :protected_branches, :developers_can_merge, :boolean, default: false, allow_null: false
+  end
+end
diff --git a/db/migrate/20160629025435_add_column_in_progress_merge_commit_sha_to_merge_requests.rb b/db/migrate/20160629025435_add_column_in_progress_merge_commit_sha_to_merge_requests.rb
new file mode 100644
index 00000000000..7c5f76572ef
--- /dev/null
+++ b/db/migrate/20160629025435_add_column_in_progress_merge_commit_sha_to_merge_requests.rb
@@ -0,0 +1,8 @@
+# See http://doc.gitlab.com/ce/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+class AddColumnInProgressMergeCommitShaToMergeRequests < ActiveRecord::Migration
+  def change
+    add_column :merge_requests, :in_progress_merge_commit_sha, :string
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index d250d65fe21..8882377f9f4 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -628,8 +628,8 @@ ActiveRecord::Schema.define(version: 20160716115710) do
     t.integer  "merge_user_id"
     t.string   "merge_commit_sha"
     t.datetime "deleted_at"
+    t.string   "in_progress_merge_commit_sha"
   end
-
   add_index "merge_requests", ["assignee_id"], name: "index_merge_requests_on_assignee_id", using: :btree
   add_index "merge_requests", ["author_id"], name: "index_merge_requests_on_author_id", using: :btree
   add_index "merge_requests", ["created_at", "id"], name: "index_merge_requests_on_created_at_and_id", using: :btree
@@ -862,11 +862,12 @@ ActiveRecord::Schema.define(version: 20160716115710) do
   add_index "projects", ["visibility_level"], name: "index_projects_on_visibility_level", using: :btree
 
   create_table "protected_branches", force: :cascade do |t|
-    t.integer  "project_id",                          null: false
-    t.string   "name",                                null: false
+    t.integer  "project_id",                           null: false
+    t.string   "name",                                 null: false
     t.datetime "created_at"
     t.datetime "updated_at"
-    t.boolean  "developers_can_push", default: false, null: false
+    t.boolean  "developers_can_push",  default: false, null: false
+    t.boolean  "developers_can_merge", default: false, null: false
   end
 
   add_index "protected_branches", ["project_id"], name: "index_protected_branches_on_project_id", using: :btree