Replace DCHECK(BrowserThread::CurrentlyOn) with DCHECK_CURRENTLY_ON in extensions.

extensions/browser/api/dns/dns_api.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 "extensions/browser/api/dns/dns_api.h"
 
 #include "base/bind.h"
 #include "base/values.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
@@ skipping 28 matching lines @@
 
   bool result = BrowserThread::PostTask(
       BrowserThread::IO,
       FROM_HERE,
       base::Bind(&DnsResolveFunction::WorkOnIOThread, this));
   DCHECK(result);
   return true;
 }
 
 void DnsResolveFunction::WorkOnIOThread() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
 
   net::HostResolver* host_resolver =
       HostResolverWrapper::GetInstance()->GetHostResolver(
           resource_context_->GetHostResolver());
   DCHECK(host_resolver);
 
   // Yes, we are passing zero as the port. There are some interesting but not
   // presently relevant reasons why HostResolver asks for the port of the
   // hostname you'd like to resolve, even though it doesn't use that value in
   // determining its answer.
   net::HostPortPair host_port_pair(hostname_, 0);
 
   net::HostResolver::RequestInfo request_info(host_port_pair);
   int resolve_result = host_resolver->Resolve(
       request_info,
       net::DEFAULT_PRIORITY,
       addresses_.get(),
       base::Bind(&DnsResolveFunction::OnLookupFinished, this),
       request_handle_.get(),
       net::BoundNetLog());
 
   // Balanced in OnLookupFinished.
   AddRef();
 
   if (resolve_result != net::ERR_IO_PENDING)
     OnLookupFinished(resolve_result);
 }
 
 void DnsResolveFunction::RespondOnUIThread() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
   SendResponse(response_);
 }
 
 void DnsResolveFunction::OnLookupFinished(int resolve_result) {
   scoped_ptr<ResolveCallbackResolveInfo> resolve_info(
       new ResolveCallbackResolveInfo());
   resolve_info->result_code = resolve_result;
   if (resolve_result == net::OK) {
     DCHECK(!addresses_->empty());
     resolve_info->address.reset(
         new std::string(addresses_->front().ToStringWithoutPort()));
   }
   results_ = Resolve::Results::Create(*resolve_info);
   response_ = true;
 
   bool post_task_result = BrowserThread::PostTask(
       BrowserThread::UI,
       FROM_HERE,
       base::Bind(&DnsResolveFunction::RespondOnUIThread, this));
   DCHECK(post_task_result);
 
   Release();  // Added in WorkOnIOThread().
 }
 
 }  // namespace extensions