Enable side-by-side beta and dev channels.

chrome/installer/mini_installer/configuration_test.cc

Index: chrome/installer/mini_installer/configuration_test.cc
diff --git a/chrome/installer/mini_installer/configuration_test.cc b/chrome/installer/mini_installer/configuration_test.cc
index b1f3400fd9c1dac1b30dc8ffb06e77095839cfe3..75be4784622d7e4673e5a32c1943e21dbc74379a 100644
--- a/chrome/installer/mini_installer/configuration_test.cc
+++ b/chrome/installer/mini_installer/configuration_test.cc
@@ -178,6 +178,10 @@ TEST_F(MiniInstallerConfigurationTest, IsUpdatingSystemMulti) {
 TEST_F(MiniInstallerConfigurationTest, ChromeAppGuid) {
   EXPECT_STREQ(google_update::kAppGuid,
                TestConfiguration(L"spam.exe").chrome_app_guid());
+  EXPECT_STREQ(google_update::kBetaAppGuid,
+               TestConfiguration(L"spam.exe --chrome-beta").chrome_app_guid());
+  EXPECT_STREQ(google_update::kDevAppGuid,
+               TestConfiguration(L"spam.exe --chrome-dev").chrome_app_guid());
   EXPECT_STREQ(google_update::kSxSAppGuid,
                TestConfiguration(L"spam.exe --chrome-sxs").chrome_app_guid());
 }