Created the gear settings entry and created a way to initialize both sections with one controller

app/controllers/projects/deploy_keys_controller.rb

@@ -7,12 +7,11 @@ class Projects::DeployKeysController < Projects::ApplicationController
   layout "project_settings"
 
   def index
-    @key = DeployKey.new
-    set_index_vars
+    redirect_to namespace_project_settings_repository_path(@project.namespace, @project)
   end
 
   def new
-    redirect_to namespace_project_deploy_keys_path(@project.namespace, @project)
+    redirect_to namespace_project_settings_repository_path(@project.namespace, @project)
   end
 
   def create
@@ -20,7 +19,7 @@ class Projects::DeployKeysController < Projects::ApplicationController
     set_index_vars
 
     if @key.valid? && @project.deploy_keys << @key
-      redirect_to namespace_project_deploy_keys_path(@project.namespace, @project)
+      redirect_to namespace_project_settings_repository_path(@project.namespace, @project)
     else
       render "index"
     end
@@ -29,7 +28,7 @@ class Projects::DeployKeysController < Projects::ApplicationController
   def enable
     Projects::EnableDeployKeyService.new(@project, current_user, params).execute
 
-    redirect_to namespace_project_deploy_keys_path(@project.namespace, @project)
+    redirect_to namespace_project_settings_repository_path(@project.namespace, @project)
   end
 
   def disable

app/controllers/projects/protected_branches_controller.rb

@@ -8,14 +8,13 @@ class Projects::ProtectedBranchesController < Projects::ApplicationController
   layout "project_settings"
 
   def index
-    @protected_branch = @project.protected_branches.new
-    load_gon_index
+    redirect_to namespace_project_settings_repository_path(@project.namespace, @project)
   end
 
   def create
     @protected_branch = ::ProtectedBranches::CreateService.new(@project, current_user, protected_branch_params).execute
     if @protected_branch.persisted?
-      redirect_to namespace_project_protected_branches_path(@project.namespace, @project)
+      redirect_to namespace_project_settings_repository_path(@project.namespace, @project)
     else
       load_protected_branches
       load_gon_index
@@ -45,7 +44,7 @@ class Projects::ProtectedBranchesController < Projects::ApplicationController
     @protected_branch.destroy
 
     respond_to do |format|
-      format.html { redirect_to namespace_project_protected_branches_path }
+      format.html { redirect_to namespace_project_settings_repository_path }
       format.js { head :ok }
     end
   end

app/controllers/projects/settings/repository_controller.rb

 module Projects
   module Settings
     class RepositoryController < Projects::ApplicationController
+      include RepositoryHelper
+
+      before_action :authorize_admin_project!
+      before_action :load_protected_branches, only: [:show]
+
       def show
-        
+        define_deploy_keys_variables
+        define_protected_branches_controller
+      end
+
+      def load_protected_branches
+        @protected_branches = @project.protected_branches.order(:name).page(params[:page])
+      end
+
+      def set_index_vars
+        @enabled_keys           ||= @project.deploy_keys
+
+        @available_keys         ||= current_user.accessible_deploy_keys - @enabled_keys
+        @available_project_keys ||= current_user.project_deploy_keys - @enabled_keys
+        @available_public_keys  ||= DeployKey.are_public - @enabled_keys
+
+        # Public keys that are already used by another accessible project are already
+        # in @available_project_keys.
+        @available_public_keys -= @available_project_keys
+      end
+
+      private
+
+      def define_deploy_keys_variables
+        @key = DeployKey.new
+        set_index_vars
+      end
+
+      def define_protected_branches_controller
+        @protected_branch = @project.protected_branches.new
+        load_gon_index(@project)
       end
     end
   end

app/helpers/repository_helper.rb

+module RepositoryHelper
+  def access_levels_options
+    {
+      push_access_levels: ProtectedBranch::PushAccessLevel.human_access_levels.map { |id, text| { id: id, text: text, before_divider: true } },
+      merge_access_levels: ProtectedBranch::MergeAccessLevel.human_access_levels.map { |id, text| { id: id, text: text, before_divider: true } }
+    }
+  end
+
+  def load_gon_index(project)
+    params = { open_branches: project.open_branches.map { |br| { text: br.name, id: br.name, title: br.name } } }
+    gon.push(params.merge(access_levels_options))
+  end
+end

app/views/layouts/nav/_project_settings.html.haml

@@ -4,18 +4,14 @@
       %span
         Members
 - if can_edit
-  = nav_link(controller: :deploy_keys) do
-    = link_to namespace_project_deploy_keys_path(@project.namespace, @project), title: 'Deploy Keys' do
+  = nav_link(controller: :repository) do
+    = link_to namespace_project_settings_repository_path(@project.namespace, @project), title: 'Repository' do
       %span
-        Deploy Keys
+        Repository
   = nav_link(controller: :integrations) do
     = link_to namespace_project_settings_integrations_path(@project.namespace, @project), title: 'Integrations' do
       %span
         Integrations
-  = nav_link(controller: :protected_branches) do
-    = link_to namespace_project_protected_branches_path(@project.namespace, @project), title: 'Protected Branches' do
-      %span
-        Protected Branches
 
   - if @project.feature_available?(:builds, current_user)
     = nav_link(controller: :ci_cd) do

app/views/projects/deploy_keys/index.html.haml → app/views/projects/deploy_keys/_index.html.haml

-- page_title "Deploy Keys"
-
 .row.prepend-top-default
   .col-lg-3.profile-settings-sidebar
     %h4.prepend-top-0
-      = page_title
+      Deploy Keys
     %p
       Deploy keys allow read-only access to your repository. Deploy keys can be used for CI, staging or production servers. You can create a deploy key or add an existing one.
   .col-lg-9
     %h5.prepend-top-0
       Create a new deploy key for this project
-    = render "form"
+    = render "projects/deploy_keys/form"
   .col-lg-9.col-lg-offset-3
     %hr
   .col-lg-9.col-lg-offset-3.append-bottom-default.deploy-keys

app/views/projects/protected_branches/_branches_list.html.haml

@@ -23,6 +23,6 @@
           - if can_admin_project
             %th
       %tbody
-        = render partial: @protected_branches, locals: { can_admin_project: can_admin_project }
+        = render partial: 'projects/protected_branches/protected_branch', collection: @protected_branches, locals: { can_admin_project: can_admin_project}
 
     = paginate @protected_branches, theme: 'gitlab'

app/views/projects/protected_branches/_create_protected_branch.html.haml

@@ -10,7 +10,7 @@
           = f.label :name, class: 'col-md-2 text-right' do
             Branch:
           .col-md-10
-            = render partial: "dropdown", locals: { f: f }
+            = render partial: "projects/protected_branches/dropdown", locals: { f: f }
             .help-block
               = link_to 'Wildcards', help_page_path('user/project/protected_branches', anchor: 'wildcard-protected-branches')
               such as

app/views/projects/protected_branches/index.html.haml → app/views/projects/protected_branches/_index.html.haml

@@ -17,6 +17,6 @@
       %p.append-bottom-0 Read more about #{link_to "protected branches", help_page_path("user/project/protected_branches"), class: "underlined-link"} and #{link_to "project permissions", help_page_path("user/permissions"), class: "underlined-link"}.
   .col-lg-9
     - if can? current_user, :admin_project, @project
-      = render 'create_protected_branch'
+      = render 'projects/protected_branches/create_protected_branch'
 
-    = render "branches_list"
+    = render "projects/protected_branches/branches_list"

app/views/projects/settings/repository/show.html.haml

-%h1
-  Hello World
+- page_title "Repository"
+
+= render "projects/deploy_keys/index"
+= render "projects/protected_branches/index"