Add modules.dll.pdb to chrome.isolate for better stack traces on bots.

chrome/chrome.isolate

 # Copyright (c) 2013 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.
 {
   'conditions': [
     ['OS=="linux"', {
       'variables': {
         'files': [
           '<(PRODUCT_DIR)/libosmesa.so',
         ],
@@ skipping 124 matching lines @@
         ],
       },
     }],
     ['OS=="win" and component=="shared_library" and (fastbuild==0 or fastbuild==1)', {
       'variables': {
         'files': [
           '<(PRODUCT_DIR)/base.dll.pdb',
           '<(PRODUCT_DIR)/blink_platform.dll.pdb',
           '<(PRODUCT_DIR)/blink_web.dll.pdb',
           '<(PRODUCT_DIR)/content.dll.pdb',
+          '<(PRODUCT_DIR)/modules.dll.pdb',
         ],
       },
     }],
   ],
   'includes': [
     '../base/base.isolate',
     '../gin/v8.isolate',
     '../ui/gl/gl.isolate',
   ],
 }