Componentize component_updater: Move a bunch of tests to component.

components/component_updater.gypi

Index: components/component_updater.gypi
diff --git a/components/component_updater.gypi b/components/component_updater.gypi
index 7c0110d385bb443ad172498035bf32897ff581de..451fea00ad3e5b2726e6291aaa82ea9d96c9b15a 100644
--- a/components/component_updater.gypi
+++ b/components/component_updater.gypi
@@ -5,6 +5,7 @@
 {
   'targets': [
     {
+      # GN version: //components/component_updater
       'target_name': 'component_updater',
       'type': 'static_library',
       'dependencies': [
@@ -57,4 +58,29 @@
       ],
     },
   ],
+
+  'conditions': [
+    ['OS != "ios"', {
+      'targets': [
+        {
+          # GN version: //components/component_updater:test_support
+          'target_name': 'component_updater_test_support',
+          'type': 'static_library',
+          'dependencies': [
+            'component_updater',
+            '../testing/gmock.gyp:gmock',
+            '../testing/gtest.gyp:gtest',
+          ],
+          'sources': [
+            'component_updater/test/test_configurator.cc',
+            'component_updater/test/test_configurator.h',
+            'component_updater/test/test_installer.cc',
+            'component_updater/test/test_installer.h',
+            'component_updater/test/url_request_post_interceptor.cc',
+            'component_updater/test/url_request_post_interceptor.h',
+          ],
+        },
+      ],
+    }],
+  ],
 }