Introduce FragmentData, and put ObjectPaintProperties into it.

third_party/WebKit/Source/core/paint/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("paint") {
   split_count = 2
   sources = [
     "BackgroundImageGeometry.cpp",
@@ skipping 38 matching lines @@
     "FileUploadControlPainter.h",
     "FilterEffectBuilder.cpp",
     "FilterEffectBuilder.h",
     "FilterPainter.cpp",
     "FilterPainter.h",
     "FindPropertiesNeedingUpdate.h",
     "FirstMeaningfulPaintDetector.cpp",
     "FirstMeaningfulPaintDetector.h",
     "FloatClipRecorder.cpp",
     "FloatClipRecorder.h",
+    "FragmentData.cpp",
+    "FragmentData.h",
     "FramePainter.cpp",
     "FramePainter.h",
     "FrameSetPainter.cpp",
     "FrameSetPainter.h",
     "GridPainter.cpp",
     "GridPainter.h",
     "HTMLCanvasPaintInvalidator.cpp",
     "HTMLCanvasPaintInvalidator.h",
     "HTMLCanvasPainter.cpp",
     "HTMLCanvasPainter.h",
@@ skipping 133 matching lines @@
     "ViewPaintInvalidator.h",
     "ViewPainter.cpp",
     "ViewPainter.h",
   ]
 
   configs += [
     # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
     "//build/config/compiler:no_size_t_to_int_warning",
   ]
 }