Remove few more errors in mac scons build.

build/SConscript.main

 # Copyright (c) 2006-2008 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 os
 import shutil
 import sys
 
 
 if sys.platform == 'win32':
@@ skipping 521 matching lines @@
 )
 mac_env.Append(BUILD_GROUPS = ['default'])
 
 mac_env.Replace(
     # Reproduce XCode's behavior of using gcc even to link C++,
     # and distinguishing it the -x c++ option.
     CC = 'gcc-4.2',
     CXX = 'g++-4.2',
     LINK = '$CXX',
 )
+mac_env.FilterOut(SHCCFLAGS = ['-fPIC'])
+mac_env.FilterOut(SHLINKFLAGS = ['-fPIC'])
 
 mac_env.FilterOut(
     BUILD_SCONSCRIPTS = [
         '$BREAKPAD_DIR/SConscript',
         '$BSDIFF_DIR/bsdiff.scons',
         '$BSPATCH_DIR/bspatch.scons',
         '$CHROME_DIR/chrome.scons',
         '$GOOGLE_UPDATE_DIR/SConscript',
         '$LIBJPEG_DIR/libjpeg.scons',
         '$LIBXML_DIR/libxml.scons',
@@ skipping 166 matching lines @@
         'all_libraries',
         'all_languages',
         'all_programs',
         'all_test_programs',
     ], projects = [p],
     COMPONENT_VS_PROJECT_SCRIPT_PATH=(
         'cd $$(ProjectDir)/$VS_PROJECT_TO_MAIN_DIR && hammer.bat'),
 )
 
 # -------------------------------------------------------------------------