Move DocumentXMLTreeViewer off of private script

third_party/WebKit/Source/core/core_idl_files.gni

 # Copyright 2016 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("//third_party/WebKit/Source/bindings/bindings.gni")
 import("//third_party/WebKit/Source/core/core.gni")
 
 # The paths in this file are absolute since this file is imported and the
 # file lists must be valid from multple "current directories".
 
@@ skipping 468 matching lines @@
                     "svg/SVGDocument.idl",
                     "svg/SVGFilterPrimitiveStandardAttributes.idl",
                     "svg/SVGFitToViewBox.idl",
                     "svg/SVGTests.idl",
                     "svg/SVGURIReference.idl",
                     "svg/SVGZoomAndPan.idl",
                     "timing/SharedWorkerPerformance.idl",
                     "timing/WindowPerformance.idl",
                     "timing/WorkerGlobalScopePerformance.idl",
                     "workers/AbstractWorker.idl",
-                    "xml/DocumentXMLTreeViewer.idl",
                     "xml/DocumentXPathEvaluator.idl",
                   ],
                   "abspath")
 
 # IDL files that only have typedefs/enums.
 core_typedefs_enums_only_idl_files =
     get_path_info([
                     "dom/CommonDefinitions.idl",
                     "timing/DOMHighResTimeStamp.idl",
                     "timing/PerformanceEntryList.idl",
@@ skipping 131 matching lines @@
 core_generated_interface_idl_files = generated_webcore_testing_idl_files  # interfaces
 core_generated_dependency_idl_files =
     core_global_constructors_generated_idl_files  # partial interfaces
 
 # Dependency IDL files: don't generate individual bindings, but do process
 # in IDL dependency computation, and count as build dependencies
 # 'core_dependency_idl_files' is already used in Source/core, so avoid
 # collision
 core_all_dependency_idl_files =
     core_static_dependency_idl_files + core_generated_dependency_idl_files