MD History: promote menu button to show clear browsing data in narrow mode

chrome/browser/prefs/browser_prefs.cc

Index: chrome/browser/prefs/browser_prefs.cc
diff --git a/chrome/browser/prefs/browser_prefs.cc b/chrome/browser/prefs/browser_prefs.cc
index be216fcf2079c0fce49c8aa56e465bd6e4129126..9abe9e7db81ac18f5a253a6ab911bd003a310f44 100644
--- a/chrome/browser/prefs/browser_prefs.cc
+++ b/chrome/browser/prefs/browser_prefs.cc
@@ -239,6 +239,10 @@
 #include "chrome/browser/ui/ash/chrome_launcher_prefs.h"
 #endif
 
+#if !defined(OS_ANDROID) && !defined(OS_IOS)
+#include "chrome/browser/ui/webui/md_history_ui.cc"
+#endif
+
 namespace {
 
 #if defined(OS_WIN)
@@ -613,6 +617,10 @@ void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry) {
   ash::launcher::RegisterChromeLauncherUserPrefs(registry);
 #endif
 
+#if !defined(OS_ANDROID) && !defined(OS_IOS)
+  MdHistoryUI::RegisterProfilePrefs(registry);
+#endif
+
   // Preferences registered only for migration (clearing or moving to a new key)
   // go here.