DevTools: migrate WatchExpressionsSidebarPane to shadow

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/public/public_features.gni")
 import("//third_party/WebKit/Source/core/core.gni")
 
 all_devtools_files = [
   "front_end/accessibility/AccessibilityModel.js",
@@ skipping 566 matching lines @@
   "front_end/sources/SourcesNavigator.js",
   "front_end/sources/sourcesPanel.css",
   "front_end/sources/SourcesPanel.js",
   "front_end/sources/sourcesSearch.css",
   "front_end/sources/SourcesSearchScope.js",
   "front_end/sources/sourcesView.css",
   "front_end/sources/SourcesView.js",
   "front_end/sources/TabbedEditorContainer.js",
   "front_end/sources/threadsSidebarPane.css",
   "front_end/sources/ThreadsSidebarPane.js",
+  "front_end/sources/watchExpressionsSidebarPane.css",
   "front_end/sources/WatchExpressionsSidebarPane.js",
   "front_end/sources/WorkspaceMappingTip.js",
   "front_end/sources/XHRBreakpointsSidebarPane.js",
   "front_end/terminal/terminal.css",
   "front_end/terminal/TerminalWidget.js",
   "front_end/terminal/xterm.js/addons/fit/fit.js",
   "front_end/terminal/xterm.js/build/xterm.css",
   "front_end/terminal/xterm.js/build/xterm.js",
   "front_end/test_runner/module.json",
   "front_end/test_runner/TestRunner.js",
@@ skipping 547 matching lines @@
     ".eslintrc.js",
     "devtools-node-modules/",
     "front_end/",
     "scripts/buildbot/run_eslint.py",
     "scripts/local_node/",
     "//testing/scripts/common.py",
     "//testing/scripts/run_devtools_check.py",
     "//testing/xvfb.py",
   ]
 }