debugging for crbug.com/646539

third_party/WebKit/Source/core/layout/BUILD.gn

 # 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/core/core.gni")
 
 blink_core_sources("layout") {
   split_count = 5
 
   sources = [
@@ skipping 141 matching lines @@
     "LayoutTextControl.cpp",
     "LayoutTextControl.h",
     "LayoutTextControlMultiLine.cpp",
     "LayoutTextControlMultiLine.h",
     "LayoutTextControlSingleLine.cpp",
     "LayoutTextControlSingleLine.h",
     "LayoutTextFragment.cpp",
     "LayoutTextFragment.h",
     "LayoutTextTrackContainer.cpp",
     "LayoutTextTrackContainer.h",
-    "LayoutTheme.cpp",
-    "LayoutTheme.h",
-    "LayoutThemeDefault.cpp",
-    "LayoutThemeDefault.h",
-    "LayoutThemeFontProvider.cpp",
-    "LayoutThemeFontProvider.h",
-    "LayoutThemeMac.h",
-    "LayoutThemeMac.mm",
-    "LayoutThemeMobile.cpp",
-    "LayoutThemeMobile.h",
+    #"LayoutTheme.cpp",
+    #"LayoutTheme.h",
+    #"LayoutThemeDefault.cpp",
+    #"LayoutThemeDefault.h",
+    #"LayoutThemeFontProvider.cpp",
+    #"LayoutThemeFontProvider.h",
+    #"LayoutThemeMac.h",
+    #"LayoutThemeMac.mm",
+    #"LayoutThemeMobile.cpp",
+    #"LayoutThemeMobile.h",
     "LayoutTreeAsText.cpp",
     "LayoutVTTCue.cpp",
     "LayoutVTTCue.h",
     "LayoutVideo.cpp",
     "LayoutVideo.h",
     "LayoutView.cpp",
     "LayoutWordBreak.cpp",
     "LayoutWordBreak.h",
     "ListMarkerText.cpp",
     "ListMarkerText.h",
@@ skipping 173 matching lines @@
       "LayoutThemeAndroid.cpp",
       "LayoutThemeAndroid.h",
     ]
   }
 
   configs += [
     # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
     "//build/config/compiler:no_size_t_to_int_warning",
   ]
 }