Add a new 'run_all_unittests' target in base

chrome/chrome_tests.gypi

Index: chrome/chrome_tests.gypi
diff --git a/chrome/chrome_tests.gypi b/chrome/chrome_tests.gypi
index 3f6665bd58fc53e52239fdc56bec5d932fb3ef61..5f1dbc444e3487a3b6fe07e4bb7f88c26a675396 100644
--- a/chrome/chrome_tests.gypi
+++ b/chrome/chrome_tests.gypi
@@ -1125,7 +1125,7 @@
       'type': 'executable',
       'dependencies': [
         'chromedriver_lib',
-        '../base/base.gyp:test_support_base',
+        '../base/base.gyp:run_all_unittests',
         '../testing/gtest.gyp:gtest',
         '../skia/skia.gyp:skia',
       ],
@@ -1133,7 +1133,6 @@
         '..',
       ],
       'sources': [
-        '../base/test/run_all_unittests.cc',
         'test/webdriver/commands/set_timeout_commands_unittest.cc',
         'test/webdriver/frame_path_unittest.cc',
         'test/webdriver/http_response_unittest.cc',
@@ -3619,7 +3618,6 @@
       'target_name': 'sync_unit_tests',
       'type': 'executable',
       'sources': [
-        '../base/test/run_all_unittests.cc',
         'browser/sync/api/sync_change_unittest.cc',
         'browser/sync/api/sync_error_unittest.cc',
         'browser/sync/internal_api/change_record_unittest.cc',
@@ -3642,7 +3640,7 @@
       ],
       'dependencies': [
         '../sync/sync.gyp:sync_tests',
-        '../base/base.gyp:test_support_base',
+        '../base/base.gyp:run_all_unittests',
         '../jingle/jingle.gyp:notifier_test_util',
         '../net/net.gyp:net',
         '../net/net.gyp:net_test_support',