Fix remove_webcore_debug_symbols to avoid constant building

third_party/WebKit/Source/core/core.gni

 # 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/chrome_build.gni")
 import("//build/split_static_library.gni")
 import("//third_party/WebKit/Source/config.gni")
 
 blink_core_output_dir = "$root_gen_dir/blink/core"
 
@@ skipping 13 matching lines @@
 # build optimize_max config applies this optimization on all platforms, so
 # compute how to modify the config list to duplicate the GYP behavior.
 # TODO revisit this behavior, as the Windows-specific part seems suspicious.
 if (is_win && is_official_build) {
   core_config_remove += [ "//build/config/compiler:default_optimization" ]
   core_config_add += [ "//build/config/compiler:optimize_max" ]
 }
 
 if (remove_webcore_debug_symbols) {
   core_config_remove += [ "//build/config/compiler:default_symbols" ]
-  core_config_add += [ "//build/config/compiler:no_symbols" ]
+  core_config_add += remove_webcore_symbols_config
 }
 
 # Use this target type to link core targets.
 if (is_component_build) {
   # To get exported symbols correct in component builds, the files must be in
   # source sets.
   core_link_large_target_type = "source_set"
   core_link_small_target_type = "source_set"
 } else {
   # In static builds some of the libraries can get >2GB on Windows so we need
@@ skipping 75 matching lines @@
 set_defaults("blink_core_sources") {
   # This sets the default list of configs when the blink_core_sources target
   # is defined. The default_compiler_configs comes from BUILDCONFIG.gn and
   # is the list normally applied to static libraries and source sets.
   configs = default_compiler_configs - core_config_remove + core_config_add
 
   # Compile each of the core sources targets with (core) precompiled header
   # support, for lower Windows build times.
   configs += [ "//third_party/WebKit/Source/core:blink_core_pch" ]
 }