Only enable shared libc++ for ASan, MSan and TSan builds.

third_party/libc++/BUILD.gn

 # Copyright 2015 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/sanitizers/sanitizers.gni")
 import("//build/toolchain/toolchain.gni")
 
-# Sanitizer builds need to override operator new, operator delete, and
+# ASan, MSan and TSan need to override operator new, operator delete, and
 # some exception handling symbols, so libc++ must be a shared library
 # to prevent duplicate symbol errors when linking.
-libcpp_is_static = !is_component_build && !using_sanitizer
+libcpp_is_static = !is_component_build && !is_asan && !is_msan && !is_tsan
 
 # Used by libc++ and libc++abi.
 config("config") {
   defines = [ "LIBCXX_BUILDING_LIBCXXABI" ]
   if (libcpp_is_static) {
     # Don't leak any symbols on a static build.
     defines += [
       "_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS",
       "_LIBCXXABI_DISABLE_VISIBILITY_ANNOTATIONS",
 
@@ skipping 116 matching lines @@
     "//buildtools/third_party/libc++abi",
   ]
 }
 
 group("libcxx_proxy") {
   deps = [
     ":libc++",
   ]
   public_configs = [ ":no_libstdcpp" ]
 }