Remove non-const version of GetDefaultSearchProvider() and make all callers call the const version

chrome/browser/android/logo_service.cc

 // Copyright 2014 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/android/logo_service.h"
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/threading/thread_task_runner_handle.h"
@@ skipping 91 matching lines @@
 
 LogoService::~LogoService() {
 }
 
 void LogoService::GetLogo(search_provider_logos::LogoObserver* observer) {
   TemplateURLService* template_url_service =
       TemplateURLServiceFactory::GetForProfile(profile_);
   if (!template_url_service)
     return;
 
-  TemplateURL* template_url = template_url_service->GetDefaultSearchProvider();
+  const TemplateURL* template_url =
+      template_url_service->GetDefaultSearchProvider();
   if (!template_url || !template_url->url_ref().HasGoogleBaseURLs(
           template_url_service->search_terms_data()))
     return;
 
   if (!logo_tracker_) {
     logo_tracker_.reset(new LogoTracker(
         profile_->GetPath().Append(kCachedLogoDirectory),
         BrowserThread::GetTaskRunnerForThread(BrowserThread::FILE),
         BrowserThread::GetBlockingPool(), profile_->GetRequestContext(),
         std::unique_ptr<search_provider_logos::LogoDelegate>(
@@ skipping 31 matching lines @@
 }
 
 LogoServiceFactory::~LogoServiceFactory() {}
 
 KeyedService* LogoServiceFactory::BuildServiceInstanceFor(
     content::BrowserContext* context) const {
   Profile* profile = static_cast<Profile*>(context);
   DCHECK(!profile->IsOffTheRecord());
   return new LogoService(profile);
 }