[DevTools] Remove outline-disclosure and sidebar-tree.

third_party/WebKit/Source/devtools/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/features.gni")
 import("//third_party/WebKit/Source/core/core.gni")
 
 devtools_embedder_scripts = [
   "front_end/devtools.js",
   "front_end/Tests.js",
@@ skipping 244 matching lines @@
   "front_end/ui/ListWidget.js",
   "front_end/ui/Panel.js",
   "front_end/ui/Popover.js",
   "front_end/ui/ProgressIndicator.js",
   "front_end/ui/ReportView.js",
   "front_end/ui/ResizerWidget.js",
   "front_end/ui/RootView.js",
   "front_end/ui/SearchableView.js",
   "front_end/ui/SettingsUI.js",
   "front_end/ui/ShortcutRegistry.js",
-  "front_end/ui/SidebarTreeElement.js",
   "front_end/ui/SoftContextMenu.js",
   "front_end/ui/SplitWidget.js",
   "front_end/ui/StackView.js",
   "front_end/ui/SwatchPopoverHelper.js",
   "front_end/ui/Toolbar.js",
   "front_end/ui/Tooltip.js",
   "front_end/ui/SuggestBox.js",
   "front_end/ui/TabbedPane.js",
   "front_end/ui/TextPrompt.js",
   "front_end/ui/ThrottledWidget.js",
@@ skipping 841 matching lines @@
     deps = [
       ":frontend_protocol_sources",
       ":supported_css_properties",
     ]
     sources = generated_scripts
     outputs = [
       "$resources_out_debug_dir/{{source_file_part}}",
     ]
   }
 }