libvpx: Fix vpxscale asm offsets dependencies for ios.

libvpx.gyp

 # Copyright (c) 2012 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.
 {
   'variables': {
     'libvpx_build_vp9%': 1,
     'libvpx_source%': 'source/libvpx',
     'conditions': [
       ['os_posix==1', {
         'asm_obj_extension': 'o',
@@ skipping 528 matching lines @@
       ],
       'variables' : {
         'unpack_lib' : '',
         'output_format':'',
         'output_dir': '<(shared_generated_dir)',
         'conditions' : [
           ['android_webview_build==1', {
             # pass the empty string for 3rd and 4th arguments of
             # intermediates-dir-for macro.
             'unpack_lib' : '$(abspath $(call intermediates-dir-for,STATIC_LIBRARIES,libvpx_asm_offsets_vpx_scale,,,$(gyp_var_prefix)))/libvpx_asm_offsets_vpx_scale.a',
-          },],
-          ['OS!="win"', {
+          }],
+          ['OS=="mac" or OS=="ios"', {
+            'unpack_lib' : '<(PRODUCT_DIR)/libvpx_asm_offsets_vpx_scale.a',
+          }],
+          ['OS!="win" and OS!="mac" and OS!="ios"', {
+            # <(LIB_DIR) not defined for "win".
             'unpack_lib' : '<(LIB_DIR)/third_party/libvpx/libvpx_asm_offsets_vpx_scale.a',
-          },],
+          }],
           ['(target_arch=="arm" or target_arch=="armv7")', {
             'output_format': 'gas',
           }, {
             'output_format': 'rvds',
           }],
         ],
       },
       'conditions': [
         ['OS=="win"', {
           'variables': {
@@ skipping 31 matching lines @@
           # Need this otherwise gyp won't run the rule on them.
           'sources': [
             '<(INTERMEDIATE_DIR)/vpx_scale_asm_offsets.o',
           ],
         }],
       ],
       'includes': ['obj_int_extract.gypi'],
     },
   ],
 }