[chrome/browser/se*-ss*] favor DCHECK_CURRENTLY_ON for better logs

chrome/browser/spellchecker/spellcheck_message_filter_mac.cc

Index: chrome/browser/spellchecker/spellcheck_message_filter_mac.cc
diff --git a/chrome/browser/spellchecker/spellcheck_message_filter_mac.cc b/chrome/browser/spellchecker/spellcheck_message_filter_mac.cc
index 06893424fbfa011a85489667858c436b3a591aee..7c0fb69e6be00aaed3c51562d4f29fe34bad921b 100644
--- a/chrome/browser/spellchecker/spellcheck_message_filter_mac.cc
+++ b/chrome/browser/spellchecker/spellcheck_message_filter_mac.cc
@@ -96,7 +96,7 @@ void SpellingRequest::RequestCheck(
     int document_tag,
     const std::vector<SpellCheckMarker>& markers) {
   DCHECK(!text.empty());
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
 
   route_id_ = route_id;
   identifier_ = identifier;
@@ -163,7 +163,7 @@ void SpellingRequest::OnRemoteCheckCompleted(
     bool success,
     const base::string16& text,
     const std::vector<SpellCheckResult>& results) {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   remote_success_ = success;
   remote_results_ = results;
 
@@ -275,7 +275,7 @@ void SpellCheckMessageFilterMac::OnRequestTextCheck(
     const base::string16& text,
     std::vector<SpellCheckMarker> markers) {
   DCHECK(!text.empty());
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
 
   // Initialize the spellcheck service if needed. The service will send the
   // language code for text breaking to the renderer. (Text breaking is required