Put transform tree building in DisplayItemPropertyTreeBuilder.

public/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("//tools/grit/grit_rule.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 }
 
@@ skipping 258 matching lines @@
     "platform/linux/WebFontInfo.h",
     "platform/linux/WebFallbackFont.h",
     "platform/linux/WebSandboxSupport.h",
     "platform/linux/WebFontRenderStyle.h",
     "platform/WebServiceWorkerProviderClient.h",
     "platform/WebAudioSourceProvider.h",
     "platform/WebGamepad.h",
     "platform/WebRTCDataChannelHandler.h",
     "platform/WebGestureCurveTarget.h",
     "platform/WebBlendMode.h",
+    "platform/WebDisplayItemClipTree.h",
     "platform/WebDisplayItemTransformTree.h",
     "platform/WebConvertableToTraceFormat.h",
     "platform/WebCryptoAlgorithm.h",
     "platform/WebScrollbarLayer.h",
     "platform/WebCredentialManagerError.h",
     "platform/WebRTCDataChannelInit.h",
     "platform/WebPrerender.h",
     "platform/WebContentLayerClient.h",
     "platform/WebFilterAnimationCurve.h",
     "platform/WebFileError.h",
@@ skipping 357 matching lines @@
 grit("image_resources") {
   output_dir = "$root_gen_dir/blink/public/resources"
   use_qualified_include = true
   source = "blink_image_resources.grd"
   outputs = [
     "grit/blink_image_resources.h",
     "blink_image_resources_100_percent.pak",
     "blink_image_resources_200_percent.pak",
   ]
 }