Make URLDataSource::GetSource() const.

chrome/browser/ui/webui/app_launcher_page_ui.cc

 // Copyright (c) 2013 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/app_launcher_page_ui.h"
 
 #include "base/memory/ref_counted_memory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/webui/ntp/app_launcher_handler.h"
 #include "chrome/browser/ui/webui/ntp/app_resource_cache_factory.h"
@@ skipping 68 matching lines @@
   return Profile::FromWebUI(web_ui());
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // HTMLSource
 
 AppLauncherPageUI::HTMLSource::HTMLSource(Profile* profile)
     : profile_(profile) {
 }
 
-std::string AppLauncherPageUI::HTMLSource::GetSource() {
+std::string AppLauncherPageUI::HTMLSource::GetSource() const {
   return chrome::kChromeUIAppLauncherPageHost;
 }
 
 void AppLauncherPageUI::HTMLSource::StartDataRequest(
     const std::string& path,
     bool is_incognito,
     const content::URLDataSource::GotDataCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   NTPResourceCache* resource = AppResourceCacheFactory::GetForProfile(profile_);
@@ skipping 14 matching lines @@
 
 bool AppLauncherPageUI::HTMLSource::ShouldReplaceExistingSource() const {
   return false;
 }
 
 bool AppLauncherPageUI::HTMLSource::ShouldAddContentSecurityPolicy() const {
   return false;
 }
 
 AppLauncherPageUI::HTMLSource::~HTMLSource() {}