Use gold for linking on both 32-bit and 64-bit linux GN builds.

R=brettw@chromium.org, thestig@chromium.org
BUG=432959

Review URL: https://codereview.chromium.org/1338893002

Cr-Commit-Position: refs/heads/master@{#348703}

build/config/compiler/BUILD.gn

@@ -44,9 +44,9 @@ declare_args() {
   # Requires profiling to be set to true.
   enable_full_stack_frames_for_profiling = false
 
-  # Use gold for linking on 64-bit Linux only (on 32-bit it runs out of
-  # address space, and it doesn't support cross-compiling).
-  use_gold = is_linux && current_cpu == "x64"
+  # Use 64-bit gold for linking on both 64-bit Linux and 32-bit linux;
+  # 32-bit Gold runs out of address-space on 32-bit bit builds.
+  use_gold = is_linux && (current_cpu == "x64" || current_cpu == "x86")
 
   # When we are going to use gold we need to find it.
   if (use_gold) {