DevTools: Fix build target dependencies following r182595

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.
 
 gypi_values = exec_script(
     "//build/gypi_to_gn.py",
     [ rebase_path("devtools.gypi") ],
     "scope",
     [ "devtools.gypi" ])
 
@@ skipping 24 matching lines @@
 visibility = [ "//third_party/WebKit/*" ]
 
 # Probably need to parameterize this. If we set it to true, there will be some
 # further work in the scripts below.
 debug_devtools = false
 
 group("devtools_frontend_resources") {
   deps = [
     ":copy_inspector_images",
     ":devtools_html",
+    ":toolbox_html",
     ":frontend_protocol_sources",
     ":supported_css_properties",
     ":build_applications",
   ]
 
   if (!debug_devtools) {
     deps += [
       ":concatenated_devtools_css",
       ":concatenated_toolbox_css",
     ]
@@ skipping 52 matching lines @@
 
   args = rebase_path(input_pages, root_build_dir) + [
     "--relative_path_dirs" ] +
     rebase_path(relative_path_dirs, root_build_dir) + [
     "--images", rebase_path(images_path, root_build_dir),
     "--output", rebase_path(outfile, root_build_dir),
   ]
 
   deps = [
     ":devtools_html",
+    ":toolbox_html",
     ":devtools_extension_api",
     ":devtools_frontend_resources",
   ]
 }
 
 template("generate_app_html") {
   assert(defined(invoker.app_name), target_name)
 
   action(target_name) {
     script = "scripts/generate_devtools_html.py"
@@ skipping 130 matching lines @@
     ":build_settings_module",
     ":build_source_frame_module",
     ":build_sources_module",
     ":build_temp_storage_shared_worker_module",
     ":build_timeline_module",
   ]
 
   if (!debug_devtools) {
     deps += [
       ":devtools_html",
+      ":toolbox_html",
       ":supported_css_properties",
       ":frontend_protocol_sources",
       ":concatenated_module_descriptors",
     ]
   }
 }
 
 # Runs the concatenate_module_scripts script.
 #  module_name: (String) The JS module name to process.
 #  imported_files: (List of strings) The list of files the input depends on.
@@ skipping 151 matching lines @@
   }
 }
 
 concatenate_css("concatenated_devtools_css") {
   app_name = "devtools"
 }
 
 concatenate_css("concatenated_toolbox_css") {
   app_name = "toolbox"
 }