Remove content_settings_client.h abstraction which isn't used

chrome/browser/ui/tab_helpers.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/ui/tab_helpers.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/command_line.h"
 #include "build/build_config.h"
 #include "chrome/browser/browser_process.h"
-#include "chrome/browser/content_settings/chrome_content_settings_client.h"
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
 #include "chrome/browser/data_use_measurement/data_use_web_contents_observer.h"
 #include "chrome/browser/engagement/site_engagement_helper.h"
 #include "chrome/browser/engagement/site_engagement_service.h"
 #include "chrome/browser/external_protocol/external_protocol_observer.h"
 #include "chrome/browser/favicon/favicon_utils.h"
 #include "chrome/browser/history/history_tab_helper.h"
 #include "chrome/browser/history/top_sites_factory.h"
 #include "chrome/browser/infobars/infobar_service.h"
 #include "chrome/browser/metrics/desktop_session_duration/desktop_session_duration_observer.h"
@@ skipping 127 matching lines @@
   // --- Common tab helpers ---
 
   autofill::ChromeAutofillClient::CreateForWebContents(web_contents);
   autofill::ContentAutofillDriverFactory::CreateForWebContentsAndDelegate(
       web_contents,
       autofill::ChromeAutofillClient::FromWebContents(web_contents),
       g_browser_process->GetApplicationLocale(),
       autofill::AutofillManager::ENABLE_AUTOFILL_DOWNLOAD_MANAGER);
   chrome_browser_net::NetErrorTabHelper::CreateForWebContents(web_contents);
   chrome_browser_net::PredictorTabHelper::CreateForWebContents(web_contents);
-  ChromeContentSettingsClient::CreateForWebContents(web_contents);
   ChromePasswordManagerClient::CreateForWebContentsWithAutofillClient(
       web_contents,
       autofill::ChromeAutofillClient::FromWebContents(web_contents));
   ChromeTranslateClient::CreateForWebContents(web_contents);
   CoreTabHelper::CreateForWebContents(web_contents);
   data_use_measurement::DataUseWebContentsObserver::CreateForWebContents(
       web_contents);
   ExternalProtocolObserver::CreateForWebContents(web_contents);
   favicon::CreateContentFaviconDriverForWebContents(web_contents);
   FindTabHelper::CreateForWebContents(web_contents);
@@ skipping 99 matching lines @@
 
   if (predictors::ResourcePrefetchPredictorFactory::GetForProfile(
       web_contents->GetBrowserContext())) {
     predictors::ResourcePrefetchPredictorTabHelper::CreateForWebContents(
         web_contents);
   }
 
   if (tracing::NavigationTracingObserver::IsEnabled())
     tracing::NavigationTracingObserver::CreateForWebContents(web_contents);
 }