Add AS to scons_import_variables and scons_propagate_variables.

build/common.gypi

 # Copyright (c) 2009 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': {
     # .gyp files should set chromium_code to 1 if they build Chromium-specific
     # code, as opposed to external code.  This variable is used to control
     # such things as the set of warnings to enable, and whether warnings are
     # treated as errors.
@@ skipping 211 matching lines @@
           'LDMODULECOM': [['$FLOCK_LDMODULE', '-o', '$TARGET', '$_LIBDIRFLAGS', '$LDMODULEFLAGS', '$SOURCES', '-Wl,--start-group', '$_LIBFLAGS', '-Wl,--end-group']],
           'IMPLICIT_COMMAND_DEPENDENCIES': 0,
           # -rpath is only used when building with shared libraries.
           'conditions': [
             [ 'library=="shared_library"', {
               'RPATH': '$LIB_DIR',
             }],
           ],
         },
         'scons_import_variables': [
+          'AS',
           'CC',
           'CXX',
           'LINK',
         ],
         'scons_propagate_variables': [
+          'AS',
           'CC',
           'CCACHE_DIR',
           'CXX',
           'DISTCC_DIR',
           'DISTCC_HOSTS',
           'HOME',
           'INCLUDE_SERVER_ARGS',
           'INCLUDE_SERVER_PORT',
           'LINK',
         ],
@@ skipping 183 matching lines @@
     # settings in target dicts.  SYMROOT is a special case, because many other
     # Xcode variables depend on it, including variables such as
     # PROJECT_DERIVED_FILE_DIR.  When a source group corresponding to something
     # like PROJECT_DERIVED_FILE_DIR is added to a project, in order for the
     # files to appear (when present) in the UI as actual files and not red
     # red "missing file" proxies, the correct path to PROJECT_DERIVED_FILE_DIR,
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }