Implement GetBrowsingDataRemoverDelegate() for BrowserContext subclasses

headless/lib/browser/headless_browser_context_impl.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 "headless/lib/browser/headless_browser_context_impl.h"
 
 #include <memory>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 223 matching lines @@
   if (!permission_manager_.get())
     permission_manager_.reset(new HeadlessPermissionManager());
   return permission_manager_.get();
 }
 
 content::BackgroundSyncController*
 HeadlessBrowserContextImpl::GetBackgroundSyncController() {
   return nullptr;
 }
 
+content::BrowsingDataRemoverDelegate*
+HeadlessBrowserContextImpl::GetBrowsingDataRemoverDelegate() {
+  return nullptr;
+}
+
 net::URLRequestContextGetter* HeadlessBrowserContextImpl::CreateRequestContext(
     content::ProtocolHandlerMap* protocol_handlers,
     content::URLRequestInterceptorScopedVector request_interceptors) {
   scoped_refptr<HeadlessURLRequestContextGetter> url_request_context_getter(
       new HeadlessURLRequestContextGetter(
           content::BrowserThread::GetTaskRunnerForThread(
               content::BrowserThread::IO),
           content::BrowserThread::GetTaskRunnerForThread(
               content::BrowserThread::FILE),
           protocol_handlers, context_options_->TakeProtocolHandlers(),
@@ skipping 197 matching lines @@
 HeadlessBrowserContext::Builder::MojoBindings::MojoBindings() {}
 
 HeadlessBrowserContext::Builder::MojoBindings::MojoBindings(
     const std::string& mojom_name,
     const std::string& js_bindings)
     : mojom_name(mojom_name), js_bindings(js_bindings) {}
 
 HeadlessBrowserContext::Builder::MojoBindings::~MojoBindings() {}
 
 }  // namespace headless