Add an experimental flag to change location.reload to take a hard-reload

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 3371 matching lines @@
 // Descriptions of the different heap profiling modes.
 extern const char kEnableHeapProfilingModePseudo[];
 extern const char kEnableHeapProfilingModeNative[];
 extern const char kEnableHeapProfilingTaskProfiler[];
 
 // Name and description of the flag allowing the usage of a small set of
 // server-side suggestions in NTP tiles.
 extern const char kUseSuggestionsEvenIfFewFeatureName[];
 extern const char kUseSuggestionsEvenIfFewFeatureDescription[];
 
+// Name of the about: flag for experimental location.reload() to trigger a
+// 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_