Add a feature flag for the security verbose

chrome/common/chrome_features.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/common/chrome_features.h"
 
 namespace features {
 
 // All features in alphabetical order.
 
@@ skipping 120 matching lines @@
 
 #if defined(ENABLE_PLUGINS)
 // Disables Plugin Power Saver when Flash is in ALLOW mode.
 const base::Feature kRunAllFlashInAllowMode{"RunAllFlashInAllowMode",
                                             base::FEATURE_DISABLED_BY_DEFAULT};
 #endif
 
 const base::Feature kSafeSearchUrlReporting{"SafeSearchUrlReporting",
                                             base::FEATURE_DISABLED_BY_DEFAULT};
 
+#if !defined(OS_ANDROID) && !defined(OS_IOS)
+extern const base::Feature kSecurityChipFeature{

[estark, 2016/10/21 20:32:27]

nit: this should have a comment above explaining it, something along the lines
of:

// Enables or disables security chips in the omnibox that show verbose
explanations for security states.

[estark, 2016/10/21 20:32:27]

nit: I don't think you need `extern` here (only in the .h)

[spqchan, 2016/10/21 21:57:06]

Done.

[spqchan, 2016/10/21 21:57:06]

Done.

+    "SecurityChipFeature", base::FEATURE_DISABLED_BY_DEFAULT};
+#endif
+
 // A new user experience for transitioning into fullscreen and mouse pointer
 // lock states.
 const base::Feature kSimplifiedFullscreenUI{"ViewsSimplifiedFullscreenUI",
                                             base::FEATURE_ENABLED_BY_DEFAULT};
 
 #if defined(SYZYASAN)
 // Enable the deferred free mechanism in the syzyasan module, which helps the
 // performance by deferring some work on the critical path to a background
 // thread.
 const base::Feature kSyzyasanDeferredFree{"SyzyasanDeferredFree",
                                           base::FEATURE_ENABLED_BY_DEFAULT};
 #endif
 
 #if defined(OS_CHROMEOS)
 // Enables or disables the opt-in IME menu in the language settings page.
 const base::Feature kOptInImeMenu{"OptInImeMenu",
                                   base::FEATURE_ENABLED_BY_DEFAULT};
 
 // Enables or disables PIN quick unlock settings integration.
 const base::Feature kQuickUnlockPin{"QuickUnlockPin",
                                     base::FEATURE_DISABLED_BY_DEFAULT};
 
 // Enables or disables emoji, handwriting and voice input on opt-in IME menu.
 const base::Feature kEHVInputOnImeMenu{"EmojiHandwritingVoiceInput",
                                        base::FEATURE_DISABLED_BY_DEFAULT};
 #endif  // defined(OS_CHROMEOS)
 
 }  // namespace features