linux: Always use (64bit) gold for linking, even on 32bit.

build/config/compiler/BUILD.gn

Index: build/config/compiler/BUILD.gn
diff --git a/build/config/compiler/BUILD.gn b/build/config/compiler/BUILD.gn
index 613223539baa20fd2d34d9c895e093cb56fc8f50..bad564717011767c8b5f9ebdc9334d1024f5750d 100644
--- a/build/config/compiler/BUILD.gn
+++ b/build/config/compiler/BUILD.gn
@@ -183,32 +183,30 @@ config("compiler") {
   if (is_linux) {
     cflags += [ "-pthread" ]
 
-    if (cpu_arch == "x64") {
-      # 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).
-      gold_path = rebase_path("//third_party/binutils/Linux_x64/Release/bin",
-                              root_build_dir)
-      ldflags += [
-        "-B$gold_path",
-
-        # There seems to be a conflict of --icf and -pie in gold which can
-        # generate crashy binaries. As a security measure, -pie takes
-        # precedence for now.
-        # TODO(brettw) common.gypi has this only for target toolset.
-        #"-Wl,--icf=safe",
-        "-Wl,--icf=none",
-
-        # Experimentation found that using four linking threads
-        # saved ~20% of link time.
-        # https://groups.google.com/a/chromium.org/group/chromium-dev/browse_thread/thread/281527606915bb36
-        # Only apply this to the target linker, since the host
-        # linker might not be gold, but isn't used much anyway.
-        # TODO(raymes): Disable threading because gold is frequently
-        # crashing on the bots: crbug.com/161942.
-        #"-Wl,--threads",
-        #"-Wl,--thread-count=4",
-      ]
-    }
+    # Use gold for linking on 64-bit Linux only (on 32-bit it runs out of
+    # address space, and it doesn't support cross-compiling).
+    gold_path = rebase_path("//third_party/binutils/Linux_x64/Release/bin",
+                            root_build_dir)
+    ldflags += [
+      "-B$gold_path",
+
+      # There seems to be a conflict of --icf and -pie in gold which can
+      # generate crashy binaries. As a security measure, -pie takes
+      # precedence for now.
+      # TODO(brettw) common.gypi has this only for target toolset.
+      #"-Wl,--icf=safe",
+      "-Wl,--icf=none",
+
+      # Experimentation found that using four linking threads
+      # saved ~20% of link time.
+      # https://groups.google.com/a/chromium.org/group/chromium-dev/browse_thread/thread/281527606915bb36
+      # Only apply this to the target linker, since the host
+      # linker might not be gold, but isn't used much anyway.
+      # TODO(raymes): Disable threading because gold is frequently
+      # crashing on the bots: crbug.com/161942.
+      #"-Wl,--threads",
+      #"-Wl,--thread-count=4",
+    ]
 
     ldflags += [
       "-pthread",