Add a simple API around the pref controlling the default browser prompt.

chrome/browser/ui/webui/settings/settings_default_browser_handler.cc

 // Copyright 2015 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/browser/ui/webui/settings/settings_default_browser_handler.h"
 
 #include "base/bind.h"
 #include "chrome/browser/browser_process.h"
+#include "chrome/browser/ui/startup/default_browser_prompt.h"
 #include "chrome/common/pref_names.h"
 #include "components/prefs/pref_service.h"
 #include "content/public/browser/web_ui.h"
 
 namespace settings {
 
 namespace {
 
 bool IsDisabledByPolicy(const BooleanPrefMember& pref) {
   return pref.IsManaged() && !pref.GetValue();
@@ skipping 30 matching lines @@
   default_browser_worker_->StartCheckIsDefault();
 }
 
 void DefaultBrowserHandler::SetAsDefaultBrowser(const base::ListValue* args) {
   CHECK(!IsDisabledByPolicy(default_browser_policy_));
 
   default_browser_worker_->StartSetAsDefault();
 
   // If the user attempted to make Chrome the default browser, notify
   // them when this changes.
-  Profile::FromWebUI(web_ui())->GetPrefs()->SetBoolean(
-      prefs::kCheckDefaultBrowser, true);
+  chrome::ResetDefaultBrowserPrompt(Profile::FromWebUI(web_ui()));
 }
 
 void DefaultBrowserHandler::OnDefaultBrowserWorkerFinished(
     shell_integration::DefaultWebClientState state) {
   if (state == shell_integration::IS_DEFAULT) {
     // Notify the user in the future if Chrome ceases to be the user's chosen
     // default browser.
-    Profile::FromWebUI(web_ui())->GetPrefs()->SetBoolean(
-        prefs::kCheckDefaultBrowser, true);
+    chrome::ResetDefaultBrowserPrompt(Profile::FromWebUI(web_ui()));
   }
 
   base::FundamentalValue is_default(state == shell_integration::IS_DEFAULT);
   base::FundamentalValue can_be_default(
       state != shell_integration::UNKNOWN_DEFAULT &&
       !IsDisabledByPolicy(default_browser_policy_) &&
       shell_integration::CanSetAsDefaultBrowser() !=
           shell_integration::SET_DEFAULT_NOT_ALLOWED);
 
   web_ui()->CallJavascriptFunction("Settings.updateDefaultBrowserState",
                                    is_default, can_be_default);
 }
 
 }  // namespace settings