Collect some histograms about signed binary downloads.

chrome/chrome_tests.gypi

Index: chrome/chrome_tests.gypi
diff --git a/chrome/chrome_tests.gypi b/chrome/chrome_tests.gypi
index da2ae09397bb2ec0f85d1c7731cd48a8944f9ace..b3c6c54043b3716680d06614697200c2a57b754e 100644
--- a/chrome/chrome_tests.gypi
+++ b/chrome/chrome_tests.gypi
@@ -1504,6 +1504,7 @@
         'browser/safe_browsing/safe_browsing_store_unittest.cc',
         'browser/safe_browsing/safe_browsing_store_unittest_helper.cc',
         'browser/safe_browsing/safe_browsing_util_unittest.cc',
+        'browser/safe_browsing/signature_util_win_unittest.cc',
         'browser/search_engines/search_host_to_urls_map_unittest.cc',
         'browser/search_engines/search_provider_install_data_unittest.cc',
         'browser/search_engines/template_url_fetcher_unittest.cc',
@@ -1985,6 +1986,7 @@
           'sources/': [
             ['exclude', '^browser/password_manager/native_backend_gnome_x_unittest.cc'],
             ['exclude', '^browser/password_manager/native_backend_kwallet_x_unittest.cc'],
+            ['exclude', '^browser/safe_browsing/download_protection_service_unittest.cc' ],
             ['exclude', '^../content/browser/geolocation/wifi_data_provider_linux_unittest.cc'],
             # TODO(thestig) Enable PrintPreviewUI tests on CrOS when
             # print preview is enabled on CrOS.