Reland: Move TouchSelectionController from content to ui

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/config/ui.gni")
 
 if (is_android) {
   import("//build/config/android/config.gni")
   import("//build/config/android/rules.gni")
 }
@@ skipping 198 matching lines @@
     "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",
     "resource/resource_handle.h",
     "text/bytes_formatting.cc",
     "text/bytes_formatting.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 529 matching lines @@
       "cocoa/menu_controller_unittest.mm",
       "cocoa/nsgraphics_context_additions_unittest.mm",
       "cocoa/nsview_additions_unittest.mm",
       "cocoa/tracking_area_unittest.mm",
       "dragdrop/os_exchange_data_provider_aurax11_unittest.cc",
       "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/touch_editing_controller_unittest.cc",
+      "touch/selection_bound_unittest.cc",
       "view_prop_unittest.cc",
       "webui/web_ui_util_unittest.cc",
       "x/selection_requestor_unittest.cc",
     ]
   }
 
   if (build_ime) {
     sources += [
       "ime/candidate_window_unittest.cc",
       "ime/chromeos/character_composer_unittest.cc",
@@ skipping 126 matching lines @@
       "dragdrop/os_exchange_data_provider_aurax11_unittest.cc",
       "x/selection_requestor_unittest.cc",
     ]
     deps += [
       "//chromeos",
     ]
   }
 }
 }
 # TODO(GYP) Mac (ui_unittest_bundle) and Android (ui_unittests_apk).