Introduce FastShowPickler which will be used for app list cold start.

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.
 {
   'targets': [
     {
       # This target contains mocks and test utilities that don't belong in
       # production libraries but are used by more than one test executable.
       'target_name': 'test_support_common',
       'type': 'static_library',
@@ skipping 2651 matching lines @@
               'CLD_WINDOWS',
             ],
           },
           'sources': [
             '../third_party/cld/encodings/compact_lang_det/compact_lang_det_unittest_small.cc',
           ],
           'dependencies': [
             '../third_party/cld/cld.gyp:cld',
           ],
         }],
+        ['enable_app_list==1', {
+          'sources': [
+            'browser/ui/app_list/test/fast_show_pickler_unittest.cc',
+          ],
+        }],
       ],
       'target_conditions': [
         ['OS == "ios"', {
           'sources/': [
             ['include', '^common/mac/nscoder_util_unittest\\.mm$'],
           ],
         }],
       ],
     },
     {
@@ skipping 105 matching lines @@
               # This *in the compile phase* must match the pdb name that's
               # output by the final link. See empty_pdb_workaround.cc for
               # more details.
               'DebugInformationFormat': '3',
               'ProgramDataBaseFileName': '<(PRODUCT_DIR)/unit_tests.exe.pdb',
             },
           },
         },
       ],
     }],
+    ['enable_app_list==1', {
+      'targets': [
+        {
+          # Unit tests for chrome app list, not run on any bots, this is for faster
+          # compile/link/test cycles during development.
+          'target_name': 'chrome_app_list_unittests',
+          'type': '<(gtest_target_type)',
+          'dependencies': [
+            '../base/base.gyp:run_all_unittests',
+            '../skia/skia.gyp:skia',
+            '../testing/gtest.gyp:gtest',
+            'apps',
+            'browser_ui',
+          ],
+          'sources': [
+            'browser/ui/app_list/test/fast_show_pickler_unittest.cc',
+          ],
+        },
+      ],
+    }],
   ],  # 'conditions'
 }