Revert of Move more of webcore_remaining into GN build files.

third_party/WebKit/Source/core/layout/svg/BUILD.gn

 # 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("svg") {
+target(core_link_small_target_type, "svg") {
+  visibility = [ "//third_party/WebKit/Source/core/*" ]
+
   sources = [
     "LayoutSVGBlock.cpp",
     "LayoutSVGBlock.h",
     "LayoutSVGContainer.cpp",
     "LayoutSVGContainer.h",
     "LayoutSVGEllipse.cpp",
     "LayoutSVGEllipse.h",
     "LayoutSVGForeignObject.cpp",
     "LayoutSVGForeignObject.h",
     "LayoutSVGGradientStop.cpp",
@@ skipping 71 matching lines @@
     "SVGTextLayoutEngineBaseline.cpp",
     "SVGTextLayoutEngineBaseline.h",
     "SVGTextLayoutEngineSpacing.cpp",
     "SVGTextLayoutEngineSpacing.h",
     "SVGTextMetrics.cpp",
     "SVGTextMetrics.h",
     "SVGTextQuery.cpp",
     "SVGTextQuery.h",
   ]
 
+  configs -= core_config_remove
+  configs += core_config_add
   configs += [
     # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
     "//build/config/compiler:no_size_t_to_int_warning",
   ]
+
+  deps = [
+    "//third_party/WebKit/Source/core:prerequisites",
+  ]
 }