Revert of Move TouchSelectionController from content to ui

ui/touch_selection/BUILD.gn

Index: ui/touch_selection/BUILD.gn
diff --git a/ui/touch_selection/BUILD.gn b/ui/touch_selection/BUILD.gn
deleted file mode 100644
index 3b477e481083ab21f168305823417fa8d9ec682a..0000000000000000000000000000000000000000
--- a/ui/touch_selection/BUILD.gn
+++ /dev/null
@@ -1,60 +0,0 @@
-# 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/rules.gni")
-}
-
-component("touch_selection") {
-  output_name = "ui_touch_selection"
-
-  sources = [
-    "selection_event_type.h",
-    "touch_handle.cc",
-    "touch_handle.h",
-    "touch_selection_controller.cc",
-    "touch_selection_controller.h",
-    "ui_touch_selection_export.h",
-  ]
-
-  defines = [ "UI_TOUCH_SELECTION_IMPLEMENTATION" ]
-
-  deps = [
-    "//base:base",
-    "//ui/base:base",
-    "//ui/events:events",
-    "//ui/events:gesture_detection",
-    "//ui/gfx/geometry:geometry",
-  ]
-}
-
-test("ui_touch_selection_unittests") {
-  sources = [
-    "touch_handle_unittest.cc",
-    "touch_selection_controller_unittest.cc",
-  ]
-
-  deps = [
-    ":touch_selection",
-    "//base/test:run_all_unittests",
-    "//testing/gtest:gtest",
-    "//ui/base:base",
-    "//ui/events:test_support",
-    "//ui/gfx:gfx",
-    "//ui/gfx:test_support",
-  ]
-}
-
-if (is_android) {
-  java_cpp_enum("ui_touch_selection_enums_srcjar") {
-    sources = [
-      "selection_event_type.h",
-    ]
-    outputs = [
-      "org/chromium/ui/touch_selection/SelectionEventType.java",
-    ]
-  }
-}