GN: Use icf=all instead of icf=safe

build/config/compiler/BUILD.gn

 # Copyright (c) 2013 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/android/config.gni")
 import("//build/config/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/nacl/config.gni")
 import("//build/toolchain/cc_wrapper.gni")
 import("//build/toolchain/toolchain.gni")
@@ skipping 339 matching lines @@
              (current_cpu == "mipsel" || current_cpu == "mips64el")) {
     # Let clang find the ld.bfd in the NDK.
     _rebased_android_toolchain_root =
         rebase_path(android_toolchain_root, root_build_dir)
     ldflags += [ "--gcc-toolchain=$_rebased_android_toolchain_root" ]
   }
 
   if (is_posix && (use_gold || (use_lld && !is_nacl)) && !using_sanitizer &&
       !(is_android && use_order_profiling)) {
     # TODO(crbug.com/576197) - gcc on x86 platforms + gold + icf=all
-    # doesn't currently work. Once it does, use icf=all everywhere.
+    # doesn't currently work on non-chromeos platforms.
     # Additionally, on Android x86 --icf=safe seems to cause issues as well.
     # Additionally, on cast Android x86, --icf=all causes issues.
     if (is_android && current_cpu == "x86") {
       ldflags += [ "-Wl,--icf=none" ]
-    } else if (is_clang || (current_cpu != "x86" && current_cpu != "x64")) {
+    } else if (is_clang || is_chromeos ||
+               (current_cpu != "x86" && current_cpu != "x64")) {
       ldflags += [ "-Wl,--icf=all" ]
     } else if (!is_android) {
       ldflags += [ "-Wl,--icf=safe" ]
     }
   }
 
   if (linux_use_bundled_binutils) {
     cflags += [ "-B$binutils_path" ]
   }
 
@@ skipping 1190 matching lines @@
 
 if (is_ios || is_mac) {
   # On Mac and iOS, this enables support for ARC (automatic ref-counting).
   # See http://clang.llvm.org/docs/AutomaticReferenceCounting.html.
   config("enable_arc") {
     common_flags = [ "-fobjc-arc" ]
     cflags_objc = common_flags
     cflags_objcc = common_flags
   }
 }