Move libc++ configs and flags out of //build/config/sanitizers

chrome/installer/linux/BUILD.gn

Index: chrome/installer/linux/BUILD.gn
diff --git a/chrome/installer/linux/BUILD.gn b/chrome/installer/linux/BUILD.gn
index d8fd944ab6b5761f5c2ff63b16163393d657704e..8f05ba39dc780ff57a8a4fe9aa9441b45cafe5ef 100644
--- a/chrome/installer/linux/BUILD.gn
+++ b/chrome/installer/linux/BUILD.gn
@@ -2,6 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/config/c++/c++.gni")
 import("//build/config/chrome_build.gni")
 import("//build/config/features.gni")
 import("//build/config/sanitizers/sanitizers.gni")
@@ -193,9 +194,6 @@ group("installer_deps") {
   if (!is_chromeos) {
     public_deps += [ ":rpm_packaging_files" ]
   }
-  if (use_custom_libcxx) {
-    public_deps += [ "//buildtools/third_party/libc++" ]
-  }
 }
 
 # Creates .deb and .rpm (RPM for non-ChromeOS only) installer packages.
@@ -242,7 +240,11 @@ template("linux_package") {
     ]
   }
 
-  if (use_custom_libcxx) {
+  # TODO(thomasanderson): Move this variable into a .gni file
+  # somewhere.  It is currently copied from
+  # buildtools/third_party/libc++/BUILD.gn.
+  libcpp_is_static = !is_component_build && !using_sanitizer
+  if (!libcpp_is_static && use_custom_libcxx) {
     packaging_files_binaries += [ "$root_out_dir/libc++.so" ]
   }