MD Settings: Add feature flag for showing content settings in a per-origin view.

chrome/browser/flag_descriptions.h

 // Copyright 2017 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.
 
 #ifndef CHROME_BROWSER_FLAG_DESCRIPTIONS_H_
 #define CHROME_BROWSER_FLAG_DESCRIPTIONS_H_
 
 // Includes needed for macros allowing conditional compilation of some strings.
 #include "build/build_config.h"
 #include "build/buildflag.h"
@@ skipping 234 matching lines @@
 // Description of the flag which changes the material design elements in the top
 // chrome of the browser.
 extern const char kTopChromeMdDescription[];
 
 // Top Chrome material design option (default).
 extern const char kTopChromeMdMaterial[];
 
 // Top Chrome material hybrid design option (for touchscreens).
 extern const char kTopChromeMdMaterialHybrid[];
 
+// Title of the flag which enables site details in MD settings.
+extern const char kSiteDetails[];
+
+// Description of the flag which enables or disables site details in MD
+// settings.
+extern const char kSiteDetailsDescription[];
+
 // Title of the flag which enables the site settings all sites list and site
 // details.
 extern const char kSiteSettings[];
 
 // Description of the flag which enables or disables the site settings all sites
 // list and site details.
 extern const char kSiteSettingsDescription[];
 
 // Title of the flag which enables or disables material design in the rest of
 // the native UI of the browser (beyond top chrome).
@@ skipping 3122 matching lines @@
 // hard-reload.
 extern const char kLocationHardReloadName[];
 
 // Description of the about: flag for experimental location.reload() to trigger
 // a hard-reload.
 extern const char kLocationHardReloadDescription[];
 
 }  // namespace flag_descriptions
 
 #endif  // CHROME_BROWSER_FLAG_DESCRIPTIONS_H_