Revert of Move more of webcore_remaining into GN build files.

third_party/WebKit/Source/core/clipboard/BUILD.gn

Index: third_party/WebKit/Source/core/clipboard/BUILD.gn
diff --git a/third_party/WebKit/Source/core/clipboard/BUILD.gn b/third_party/WebKit/Source/core/clipboard/BUILD.gn
deleted file mode 100644
index e183e82cbc3f6889289ea9aa8e670e31d93eac7a..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/core/clipboard/BUILD.gn
+++ /dev/null
@@ -1,29 +0,0 @@
-# Copyright 2016 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("//third_party/WebKit/Source/core/core.gni")
-
-blink_core_sources("clipboard") {
-  sources = [
-    "DataObject.cpp",
-    "DataObject.h",
-    "DataObjectItem.cpp",
-    "DataObjectItem.h",
-    "DataTransfer.cpp",
-    "DataTransfer.h",
-    "DataTransferItem.cpp",
-    "DataTransferItem.h",
-    "DataTransferItemList.cpp",
-    "DataTransferItemList.h",
-    "DraggedIsolatedFileSystem.cpp",
-    "DraggedIsolatedFileSystem.h",
-    "Pasteboard.cpp",
-    "Pasteboard.h",
-  ]
-
-  configs += [
-    # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
-    "//build/config/compiler:no_size_t_to_int_warning",
-  ]
-}