Replace cc::ViewportSelectionBound with gfx::SelectionBound

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.
 
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 
 component("cc") {
   sources = [
     "animation/animation.cc",
@@ skipping 247 matching lines @@
     "output/shader.h",
     "output/software_output_device.cc",
     "output/software_output_device.h",
     "output/software_renderer.cc",
     "output/software_renderer.h",
     "output/static_geometry_binding.cc",
     "output/static_geometry_binding.h",
     "output/swap_promise.h",
     "output/texture_mailbox_deleter.cc",
     "output/texture_mailbox_deleter.h",
-    "output/viewport_selection_bound.cc",
-    "output/viewport_selection_bound.h",
     "output/vulkan_context_provider.h",
     "output/vulkan_in_process_context_provider.cc",
     "output/vulkan_in_process_context_provider.h",
     "playback/clip_display_item.cc",
     "playback/clip_display_item.h",
     "playback/clip_path_display_item.cc",
     "playback/clip_path_display_item.h",
     "playback/compositing_display_item.cc",
     "playback/compositing_display_item.h",
     "playback/decoded_draw_image.cc",
@@ skipping 737 matching lines @@
     "//ui/gfx/geometry",
     "//ui/gl",
     "//ui/gl:test_support",
   ]
 
   # This target should not require the Chrome executable to run.
   assert_no_deps = [ "//chrome" ]
 }
 # When adding support for isolates, please have a look at run-time dependencies
 # in the cc_unittests_run target in cc_tests.gyp.