[chrome/browser/net] favor DCHECK_CURRENTLY_ON for better logs

chrome/browser/net/chrome_url_request_context_getter.cc

Index: chrome/browser/net/chrome_url_request_context_getter.cc
diff --git a/chrome/browser/net/chrome_url_request_context_getter.cc b/chrome/browser/net/chrome_url_request_context_getter.cc
index ab3ed5d1838412365771a761799f7230c9359f16..5f6f524c417b1114298475f5e3589e36d1d5603e 100644
--- a/chrome/browser/net/chrome_url_request_context_getter.cc
+++ b/chrome/browser/net/chrome_url_request_context_getter.cc
@@ -179,7 +179,7 @@ ChromeURLRequestContextGetter::~ChromeURLRequestContextGetter() {}
 // Lazily create a URLRequestContext using our factory.
 net::URLRequestContext*
 ChromeURLRequestContextGetter::GetURLRequestContext() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
 
   if (factory_.get()) {
     DCHECK(!url_request_context_);
@@ -195,7 +195,7 @@ ChromeURLRequestContextGetter::GetURLRequestContext() {
 }
 
 void ChromeURLRequestContextGetter::Invalidate() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
   factory_.reset();
   url_request_context_ = NULL;
 }