Move SelectionBound from ui/base/touch to ui/gfx to be used by cc

ui/base/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/buildflag_header.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 import("//ui/base/ui_features.gni")
@@ skipping 215 matching lines @@
     "resource/resource_bundle_ios.mm",
     "resource/resource_bundle_mac.mm",
     "resource/resource_bundle_win.cc",
     "resource/resource_bundle_win.h",
     "resource/resource_data_dll_win.cc",
     "resource/resource_data_dll_win.h",
     "template_expressions.cc",
     "template_expressions.h",
     "theme_provider.cc",
     "theme_provider.h",
-    "touch/selection_bound.cc",
-    "touch/selection_bound.h",
     "touch/touch_device.h",
     "touch/touch_editing_controller.cc",
     "touch/touch_editing_controller.h",
     "touch/touch_enabled.cc",
     "touch/touch_enabled.h",
     "ui_base_export.h",
     "ui_base_exports.cc",
     "ui_base_paths.cc",
     "ui_base_paths.h",
     "ui_base_switches.cc",
@@ skipping 528 matching lines @@
       "cocoa/nscolor_additions_unittest.mm",
       "cocoa/nsgraphics_context_additions_unittest.mm",
       "cocoa/nsview_additions_unittest.mm",
       "cocoa/three_part_image_unittest.mm",
       "cocoa/tracking_area_unittest.mm",
       "models/list_model_unittest.cc",
       "models/list_selection_model_unittest.cc",
       "models/tree_node_model_unittest.cc",
       "test/data/resource.h",
       "text/bytes_formatting_unittest.cc",
-      "touch/selection_bound_unittest.cc",
       "webui/web_ui_util_unittest.cc",
     ]
   }
 
   if (build_ime) {
     sources += [
       "ime/candidate_window_unittest.cc",
       "ime/chromeos/character_composer_unittest.cc",
       "ime/composition_text_unittest.cc",
       "ime/input_method_base_unittest.cc",
@@ skipping 160 matching lines @@
 if (is_mac) {
   mac_framework_bundle("ui_unittests_framework") {
     testonly = true
     deps = [
       "//ui/resources:ui_test_pak_bundle_data",
     ]
     info_plist = "test/framework-Info.plist"
     output_name = "ui_unittests Framework"
   }
 }