Add rule to build nacl_helper_nonsfi for ARM

src/nonsfi/loader/loader.gyp

Index: src/nonsfi/loader/loader.gyp
diff --git a/src/nonsfi/loader/loader.gyp b/src/nonsfi/loader/loader.gyp
index a0b9d729f625a5a2acc02d24c3d1604f22575412..a4ed2c7d8c561dc06a4dd3d2874dac9668933b36 100644
--- a/src/nonsfi/loader/loader.gyp
+++ b/src/nonsfi/loader/loader.gyp
@@ -44,6 +44,12 @@
               '>(tc_lib_dir_nonsfi_helper32)/libplatform.a',
             ],
           }],
+          ['target_arch=="arm"', {
+            'extra_deps_newlib_arm_nonsfi': [
+              '>(tc_lib_dir_nonsfi_helper_arm)/libgio.a',
+              '>(tc_lib_dir_nonsfi_helper_arm)/libplatform.a',
+            ],
+          }],
         ],
       },
       'sources': [