Add flags entries to test chrome OS component updates in release mode.

chrome/browser/about_flags.cc

Index: chrome/browser/about_flags.cc
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index c42000ecd864c84f059209e7a47c507059647573..be93ea9f15cce065f0d822edded8cb1a901967db 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -2101,6 +2101,14 @@ const FeatureEntry kFeatureEntries[] = {
      IDS_FLAGS_MEDIA_REMOTING_ENCRYPTED_DESCRIPTION, kOsDesktop,
      FEATURE_VALUE_TYPE(features::kMediaRemotingEncrypted)},
 #endif
+#if defined(OS_CHROMEOS)
+    {"cros-comp-updates", IDS_FLAGS_CROS_COMP_UPDATES_NAME,
+     IDS_FLAGS_CROS_COMP_UPDATES_DESCRIPTION, kOsCrOS,
+     FEATURE_VALUE_TYPE(features::kCrosCompUpdates)},
+    {"component-flash-only", IDS_FLAGS_COMPONENT_FLASH_ONLY_NAME,
+     IDS_FLAGS_COMPONENT_FLASH_ONLY_DESCRIPTION, kOsCrOS,
+     FEATURE_VALUE_TYPE(features::kComponentFlashOnly)},
+#endif
 
     // NOTE: Adding new command-line switches requires adding corresponding
     // entries to enum "LoginCustomFlags" in histograms.xml. See note in