Move test runner to a component

content/content_tests.gypi

 # 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.
 
 {
   'variables': {
     'layouttest_support_content_sources': [
       'public/test/layouttest_support.h',
       'public/test/nested_message_pump_android.cc',
       'public/test/nested_message_pump_android.h',
@@ skipping 747 matching lines @@
         ['OS=="android"', {
           'dependencies': [
             'test_support_content_jni_headers',
           ],
         }],
         ['OS!="ios"', {
           # layouttest_support_content is not supported nor required on iOS.
           'dependencies': [
             'content.gyp:content_renderer',
             'test_support_content',
+            '../components/test_runner/test_runner.gyp:test_runner',
             '../skia/skia.gyp:skia',
             '../ui/accessibility/accessibility.gyp:ax_gen',
             '../ui/base/ime/ui_base_ime.gyp:ui_base_ime',
             '../v8/tools/gyp/v8.gyp:v8',
           ],
           'include_dirs': [
             '..',
             '<(SHARED_INTERMEDIATE_DIR)',
           ],
           'sources': [ '<@(layouttest_support_content_sources)' ]
@@ skipping 1380 matching lines @@
                   'files': ['<(PRODUCT_DIR)/libnpapi_test_plugin.so'],
                 },
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }