Allow layers to signal that additional sequences are needed before surface destruction

cc/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.
 
 component("cc") {
   sources = [
     "animation/animation.cc",
     "animation/animation.h",
     "animation/animation_curve.cc",
     "animation/animation_curve.h",
@@ skipping 173 matching lines @@
     "layers/scrollbar_layer_impl_base.h",
     "layers/scrollbar_layer_interface.h",
     "layers/solid_color_layer.cc",
     "layers/solid_color_layer.h",
     "layers/solid_color_layer_impl.cc",
     "layers/solid_color_layer_impl.h",
     "layers/solid_color_scrollbar_layer.cc",
     "layers/solid_color_scrollbar_layer.h",
     "layers/solid_color_scrollbar_layer_impl.cc",
     "layers/solid_color_scrollbar_layer_impl.h",
+    "layers/surface_holder.cc",
+    "layers/surface_holder.h",
     "layers/surface_layer.cc",
     "layers/surface_layer.h",
     "layers/surface_layer_impl.cc",
     "layers/surface_layer_impl.h",
     "layers/texture_layer.cc",
     "layers/texture_layer.h",
     "layers/texture_layer_client.h",
     "layers/texture_layer_impl.cc",
     "layers/texture_layer_impl.h",
     "layers/tiled_layer.cc",
@@ skipping 488 matching lines @@
     "layers/nine_patch_layer_unittest.cc",
     "layers/painted_scrollbar_layer_impl_unittest.cc",
     "layers/picture_image_layer_impl_unittest.cc",
     "layers/picture_layer_impl_unittest.cc",
     "layers/picture_layer_unittest.cc",
     "layers/render_surface_unittest.cc",
     "layers/render_surface_impl_unittest.cc",
     "layers/scrollbar_layer_unittest.cc",
     "layers/solid_color_layer_impl_unittest.cc",
     "layers/solid_color_scrollbar_layer_impl_unittest.cc",
+    "layers/surface_layer_unittest.cc",
     "layers/surface_layer_impl_unittest.cc",
     "layers/texture_layer_unittest.cc",
     "layers/texture_layer_impl_unittest.cc",
     "layers/tiled_layer_impl_unittest.cc",
     "layers/tiled_layer_unittest.cc",
     "layers/ui_resource_layer_impl_unittest.cc",
     "layers/ui_resource_layer_unittest.cc",
     "layers/video_layer_impl_unittest.cc",
     "output/begin_frame_args_unittest.cc",
     "output/delegating_renderer_unittest.cc",
@@ skipping 113 matching lines @@
     "//gpu/command_buffer/common:gles2_utils",
     "//media",
     "//skia",
     "//testing/gmock",
     "//testing/gtest",
     "//testing/perf",
     "//ui/gfx",
     "//ui/gfx/geometry",
   ]
 }