Make JSONParser a pure interface.

chrome/chrome_tests_unit.gypi

 # Copyright 2012 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': {
     'chrome_unit_tests_sources': [
       # histograms.xml is analyzed by AboutFlagsHistogramTest, so this
       # dependency is needed to make commit bots run unit_tests on
       # histograms.xml changes.
       '../tools/metrics/histograms/histograms.xml',
@@ skipping 2202 matching lines @@
         '<@(chrome_unit_tests_sources)',
         '<@(chrome_unit_tests_js_sources)',
         '<@(chrome_unit_tests_gtestjs_sources)',
       ],
       'conditions': [
         ['OS!="ios"', {
           'dependencies': [
             '../components/components.gyp:autofill_content_test_support',
             '../components/components.gyp:component_metrics_proto',
             '../components/components.gyp:data_reduction_proxy_test_support',
+            '../components/components.gyp:safe_json_test_support',
             '../components/components.gyp:webdata_services_test_support',
             '../components/components_strings.gyp:components_strings',
             '../content/app/resources/content_resources.gyp:content_resources',
             '../device/bluetooth/bluetooth.gyp:device_bluetooth_mocks',
             '../gpu/gpu.gyp:gpu_unittest_utils',
             '../media/media.gyp:media_test_support',
             '../ppapi/ppapi_internal.gyp:ppapi_unittest_shared',
             '../third_party/leveldatabase/leveldatabase.gyp:leveldatabase',
             '../third_party/libaddressinput/libaddressinput.gyp:libaddressinput',
             '../third_party/libphonenumber/libphonenumber.gyp:libphonenumber',
@@ skipping 648 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }