Fix arm/LTO build by moving neon asm files to intrinsics target.

ads2gas.gypi

+# Copyright (c) 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.
+
+# This file is meant to be included into a target to provide a rule
+# for translating .asm files to .S files using ads2gas.
+#
+# To use this, create a gyp target with the following form:
+# {
+#   'target_name': 'my_lib',
+#   'sources': [
+#     'foo.asm',
+#     'bar.c',
+#   ],
+#   'includes': [ 'ads2gas.gypi' ],
+# }
+{
+  'variables': {
+    # Location of the intermediate output.
+    'shared_generated_dir': '<(SHARED_INTERMEDIATE_DIR)/third_party/libvpx',
+    'variables': {
+      'libvpx_source%': 'source/libvpx',
+      'conditions': [
+        ['OS=="ios"', {
+          'ads2gas_script%': 'ads2gas_apple.pl',
+        }, {
+          'ads2gas_script%': 'ads2gas.pl',
+        }],
+      ],
+    },
+    'ads2gas_script%': '<(ads2gas_script)',
+    'ads2gas_script_dir': '<(libvpx_source)/build/make',
+  },
+  'rules': [
+    {
+      'rule_name': 'convert_asm',
+      'extension': 'asm',
+      'inputs': [
+        '<(ads2gas_script_dir)/<(ads2gas_script)',
+        '<(ads2gas_script_dir)/thumb.pm',
+      ],
+      'outputs': [
+        '<(shared_generated_dir)/<(RULE_INPUT_ROOT).S',
+      ],
+      'action': [
+        'bash',
+        '-c',
+        'cat <(RULE_INPUT_PATH) | perl <(ads2gas_script_dir)/<(ads2gas_script) -chromium > <(shared_generated_dir)/<(RULE_INPUT_ROOT).S',
+      ],
+      'process_outputs_as_sources': 1,
+      'message': 'Convert libvpx asm file for ARM <(RULE_INPUT_PATH)',
+    },
+  ],
+}