Add title to current page in zero suggest.

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 3308 matching lines @@
 // Description of the autoplay policy that requires a user gesture on cross
 // origin iframes.
 extern const char kAutoplayPolicyCrossOriginUserGestureRequired[];
 
 // Description of the autoplay policy that has no user gesture requirements.
 extern const char kAutoplayPolicyNoUserGestureRequired[];
 
 // Description of the autoplay policy that requires a user gesture.
 extern const char kAutoplayPolicyUserGestureRequired[];
 
+// Name for the about: flag for including the title to auto complete match for
+// current URL.
+extern const char kIncludeTitleToACMatchForCurrentUrlName[];
+
+// Name of the about: flag for displaying the title of the omnibox match for
+// current URL.
+extern const char kOmniboxDisplayTitleForCurrentUrlName[];
+
+// Description of the about: flag for displaying the title of the omnibox match
+// for current URL.
+extern const char kOmniboxDisplayTitleForCurrentUrlDescription[];
+
 }  // namespace flag_descriptions
 
 #endif  // CHROME_BROWSER_FLAG_DESCRIPTIONS_H_