Use source position table for unoptimized code.

src/v8.gyp

 # Copyright 2012 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 910 matching lines @@
         'interpreter/control-flow-builders.cc',
         'interpreter/control-flow-builders.h',
         'interpreter/handler-table-builder.cc',
         'interpreter/handler-table-builder.h',
         'interpreter/interpreter.cc',
         'interpreter/interpreter.h',
         'interpreter/interpreter-assembler.cc',
         'interpreter/interpreter-assembler.h',
         'interpreter/interpreter-intrinsics.cc',
         'interpreter/interpreter-intrinsics.h',
-        'interpreter/source-position-table.cc',
-        'interpreter/source-position-table.h',
         'isolate-inl.h',
         'isolate.cc',
         'isolate.h',
         'json-parser.cc',
         'json-parser.h',
         'json-stringifier.cc',
         'json-stringifier.h',
         'keys.h',
         'keys.cc',
         'layout-descriptor-inl.h',
@@ skipping 154 matching lines @@
         'snapshot/serializer.cc',
         'snapshot/serializer.h',
         'snapshot/serializer-common.cc',
         'snapshot/serializer-common.h',
         'snapshot/snapshot.h',
         'snapshot/snapshot-common.cc',
         'snapshot/snapshot-source-sink.cc',
         'snapshot/snapshot-source-sink.h',
         'snapshot/startup-serializer.cc',
         'snapshot/startup-serializer.h',
+        'source-position-table.cc',
+        'source-position-table.h',
         'source-position.h',
         'splay-tree.h',
         'splay-tree-inl.h',
         'startup-data-util.cc',
         'startup-data-util.h',
         'string-builder.cc',
         'string-builder.h',
         'string-search.h',
         'string-stream.cc',
         'string-stream.h',
@@ skipping 1169 matching lines @@
         }],
         ['want_separate_host_toolset==1', {
           'toolsets': ['host'],
         }, {
           'toolsets': ['target'],
         }],
       ],
     },
   ],
 }