[MIPS] Adding NaCl/PNaCl support for mipsel to GN

ppapi/native_client/nacl_test_data.gni

 # Copyright 2015 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/nacl/rules.gni")
 
 assert(enable_nacl)
 
 if (current_cpu == "pnacl") {
   if (is_nacl_nonsfi) {
@@ skipping 210 matching lines @@
           }
         } else {
           # TODO(phosek): remove the following once change 1360243003 is rolled
           # into Chrome and use translate_cpu directly.
           if (translate_cpu == "x86") {
             arch = "i686"
           } else if (translate_cpu == "x64") {
             arch = "x86-64"
           } else if (translate_cpu == "arm") {
             arch = "armv7"
+          } else if (translate_cpu == "mipsel") {
+            arch = "mipsel"
           }
         }
 
         # The pre-translated object file has to be linked with an IRT shim to
         # get a runnable nexe. This is handled by pnacl-translate, which passes
         # -l:libpnacl_irt_shim.a to native linker, and we need to ensure the
         # linker can find the correct library.
         if (is_nacl_nonsfi) {
           pnacl_irt_shim = "//ppapi/native_client/src/untrusted/pnacl_irt_shim:aot(//build/toolchain/nacl:newlib_pnacl_nonsfi)"
         } else {
@@ skipping 147 matching lines @@
       }
     }
     if (generate_nmf) {
       data_deps += [ ":$nmf_target_name" ]
     }
     if (defined(invoker.test_files)) {
       data_deps += [ ":$test_files_target_name" ]
     }
   }
 }