win: Make asan work with isolates.

base/base.isolate

 # Copyright 2014 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.
 {
   'includes': [
     # While the target 'base' doesn't depend on ../third_party/icu/icu.gyp
     # itself, virtually all targets using it has to include icu. The only
     # exception is the Windows sandbox (?).
     '../third_party/icu/icu.isolate',
   ],
@@ skipping 16 matching lines @@
       'variables': {
         'files': [
           '../third_party/llvm-build/Release+Asserts/lib/libstdc++.so.6',
         ],
       },
     }],
     ['asan==1', {
       'variables': {
         'files': [
           '../tools/valgrind/asan/',
-          '../third_party/llvm-build/Release+Asserts/bin/llvm-symbolizer',
+          '../third_party/llvm-build/Release+Asserts/bin/llvm-symbolizer<(EXECUTABLE_SUFFIX)',
         ],
       },
     }],
     ['lsan==1', {
       'variables': {
         'files': [
           '../tools/lsan/suppressions.txt',
         ],
       },
     }],
@@ skipping 14 matching lines @@
         'files': [
           # Copy the VS runtime DLLs into the isolate so that they
           # don't have to be preinstalled on the target machine.
           '<(PRODUCT_DIR)/msvcp120.dll',
           '<(PRODUCT_DIR)/msvcr120.dll',
         ],
       },
     }],
   ],
 }