Move part of scanner.* into scanner-base.* for reuse in preparser scanner.

tools/gyp/v8.gyp

 # Copyright 2009 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 408 matching lines @@
         '../../src/regexp-macro-assembler.h',
         '../../src/regexp-stack.cc',
         '../../src/regexp-stack.h',
         '../../src/register-allocator.h',
         '../../src/register-allocator-inl.h',
         '../../src/register-allocator.cc',
         '../../src/rewriter.cc',
         '../../src/rewriter.h',
         '../../src/runtime.cc',
         '../../src/runtime.h',
+        '../../src/scanner-base.cc',
+        '../../src/scanner-base.h',
         '../../src/scanner.cc',
         '../../src/scanner.h',
         '../../src/scopeinfo.cc',
         '../../src/scopeinfo.h',
         '../../src/scopes.cc',
         '../../src/scopes.h',
         '../../src/serialize.cc',
         '../../src/serialize.h',
         '../../src/shell.h',
         '../../src/smart-pointer.h',
@@ skipping 301 matching lines @@
       ],
       'conditions': [
         ['OS=="win"', {
           # This could be gotten by not setting chromium_code, if that's OK.
           'defines': ['_CRT_SECURE_NO_WARNINGS'],
         }],
       ],
     },
   ],
 }