Add missing dependency: debugger depends on chrome_strings.

chrome/chrome.gyp

 # Copyright (c) 2009 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.
 
 {
   'variables': {
     'chromium_code': 1,
     # Define the common dependencies that contain all the actual
     # Chromium functionality.  This list gets pulled in below by
     # the link of the actual chrome (or chromium) executable on
@@ skipping 2066 matching lines @@
           ],
         }],
       ],
     },
     {
       'target_name': 'debugger',
       'type': '<(library)',
       'msvs_guid': '57823D8C-A317-4713-9125-2C91FDFD12D6',
       'dependencies': [
         'chrome_resources',
+        'chrome_strings',
         'theme_resources',
         '../skia/skia.gyp:skia',
         '../third_party/icu38/icu38.gyp:icui18n',
         '../third_party/icu38/icu38.gyp:icuuc',
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
         'browser/debugger/debugger_remote_service.cc',
@@ skipping 2744 matching lines @@
               # Use outputs of this action as inputs for the main target build.
               # Seems as a misnomer but makes this happy on Linux (scons).
               'process_outputs_as_sources': 1,
             },
           ],  # 'actions'
         },
       ]
     }],
   ],  # 'conditions'
 }