[PhysicalWeb] Add physical_web namespace.

ios/chrome/browser/application_context_impl.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 "ios/chrome/browser/application_context_impl.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/command_line.h"
@@ skipping 268 matching lines @@
 }
 
 CRLSetFetcher* ApplicationContextImpl::GetCRLSetFetcher() {
   DCHECK(thread_checker_.CalledOnValidThread());
   if (!crl_set_fetcher_) {
     crl_set_fetcher_ = new CRLSetFetcher;
   }
   return crl_set_fetcher_.get();
 }
 
-PhysicalWebDataSource* ApplicationContextImpl::GetPhysicalWebDataSource() {
+physical_web::PhysicalWebDataSource*
+ApplicationContextImpl::GetPhysicalWebDataSource() {
   DCHECK(thread_checker_.CalledOnValidThread());
   if (!physical_web_data_source_) {
     physical_web_data_source_ = CreateIOSChromePhysicalWebDataSource();
     DCHECK(physical_web_data_source_);
   }
   return physical_web_data_source_.get();
 }
 
 void ApplicationContextImpl::SetApplicationLocale(const std::string& locale) {
   DCHECK(thread_checker_.CalledOnValidThread());
@@ skipping 44 matching lines @@
           base::SequencedWorkerPool::SKIP_ON_SHUTDOWN));
 
   gcm_driver_ = gcm::CreateGCMDriverDesktop(
       base::WrapUnique(new gcm::GCMClientFactory), GetLocalState(), store_path,
       GetSystemURLRequestContext(), ::GetChannel(),
       IOSChromeGCMProfileServiceFactory::GetProductCategoryForSubtypes(),
       web::WebThread::GetTaskRunnerForThread(web::WebThread::UI),
       web::WebThread::GetTaskRunnerForThread(web::WebThread::IO),
       blocking_task_runner);
 }