Reenable -Wl,-z,defs on mipsel

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")
 if (cpu_arch == "arm") {
   import("//build/config/arm.gni")
 }
 if (cpu_arch == "mipsel" || cpu_arch == "mips64el") {
   import("//build/config/mips.gni")
@@ skipping 332 matching lines @@
       "-fPIC",
       "-pipe",  # Use pipes for communicating between sub-processes. Faster.
     ]
 
     ldflags += [
       "-fPIC",
       "-Wl,-z,noexecstack",
       "-Wl,-z,now",
       "-Wl,-z,relro",
     ]
-
-    # TODO(zork): The mipsel build is broken in ffmpeg, guard this flag for now
-    # to hide the breakage. https://crbug.com/450771
-    if (!using_sanitizer && cpu_arch != "mipsel") {
+    if (!using_sanitizer) {
       ldflags += [ "-Wl,-z,defs" ]
     }
   }
 
   # Linux-specific compiler flags setup.
   # ------------------------------------
   if (is_linux) {
     cflags += [ "-pthread" ]
     ldflags += [ "-pthread" ]
   }
@@ skipping 683 matching lines @@
       cflags += [ "-gsplit-dwarf" ]
     }
   }
 }
 
 config("no_symbols") {
   if (!is_win) {
     cflags = [ "-g0" ]
   }
 }