Fix remove_webcore_debug_symbols to avoid constant building

third_party/WebKit/Source/platform/wtf/BUILD.gn

 # Copyright 2017 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.
 
 assert(!is_ios)
 
 import("//testing/test.gni")
 import("//third_party/WebKit/Source/config.gni")
 
 visibility = [
@@ skipping 297 matching lines @@
     ]
   } else {
     sources -= [
       "text/AtomicStringCF.cpp",
       "text/StringImplCF.cpp",
     ]
   }
 
   if (remove_webcore_debug_symbols) {
     configs -= [ "//build/config/compiler:default_symbols" ]
-    configs += [ "//build/config/compiler:no_symbols" ]
+    configs += remove_webcore_symbols_config
   }
 }
 
 test("wtf_unittests") {
   visibility = []  # Allow re-assignment of list.
   visibility = [ "*" ]
 
   sources = [
     "ASCIICTypeTest.cpp",
     "AssertionsTest.cpp",
@@ skipping 48 matching lines @@
   ]
 
   deps = [
     ":wtf",
     "//base",
     "//base/test:test_support",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }