Only promote fixed position elements on low dpi without transform or opacity.

third_party/WebKit/Source/core/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("//build/config/chromecast_build.gni")
 import("//build/toolchain/toolchain.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//testing/libfuzzer/fuzzer_test.gni")
 import("//third_party/WebKit/Source/bindings/bindings.gni")
@@ skipping 1201 matching lines @@
     "layout/LayoutThemeTest.cpp",
     "layout/MapCoordinatesTest.cpp",
     "layout/MultiColumnFragmentainerGroupTest.cpp",
     "layout/OverflowModelTest.cpp",
     "layout/PaginationTest.cpp",
     "layout/PaintContainmentTest.cpp",
     "layout/ScrollAnchorTest.cpp",
     "layout/TextAutosizerTest.cpp",
     "layout/VisualRectMappingTest.cpp",
     "layout/compositing/CompositedLayerMappingTest.cpp",
+    "layout/compositing/CompositingReasonFinderTest.cpp",
     "layout/ng/ng_block_layout_algorithm_test.cc",
     "layout/ng/ng_constraint_space_test.cc",
     "layout/ng/ng_length_utils_test.cc",
     "layout/ng/ng_units_test.cc",
     "layout/shapes/BoxShapeTest.cpp",
     "layout/svg/LayoutSVGRootTest.cpp",
     "loader/DocumentLoadTimingTest.cpp",
     "loader/FrameFetchContextTest.cpp",
     "loader/LinkLoaderTest.cpp",
     "loader/MixedContentCheckerTest.cpp",
@@ skipping 82 matching lines @@
   sources = [
     "html/parser/HTMLPreloadScannerFuzzer.cpp",
     "html/parser/TextResourceDecoderForFuzzing.h",
   ]
   seed_corpus = "//third_party/WebKit/LayoutTests/fast/parser"
   deps = [
     ":core",
     "../platform:blink_fuzzer_test_support",
   ]
 }