favor DCHECK_CURRENTLY_ON for better logs in content/{public,shell,test}/

content/shell/browser/shell_login_dialog_mac.mm

Index: content/shell/browser/shell_login_dialog_mac.mm
diff --git a/content/shell/browser/shell_login_dialog_mac.mm b/content/shell/browser/shell_login_dialog_mac.mm
index 3e014e8791ce42a50ba1bd1ee96ac50bd6182ad0..a7d24566872bafaa165f306ba20571334fc71dde 100644
--- a/content/shell/browser/shell_login_dialog_mac.mm
+++ b/content/shell/browser/shell_login_dialog_mac.mm
@@ -88,7 +88,7 @@ const int kPasswordFieldTag = 2;
 namespace content {
 
 void ShellLoginDialog::PlatformCreateDialog(const base::string16& message) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
   helper_ = [[ShellLoginDialogHelper alloc] init];
 
   // Show the modal dialog.
@@ -109,13 +109,13 @@ void ShellLoginDialog::PlatformCreateDialog(const base::string16& message) {
 }
 
 void ShellLoginDialog::PlatformCleanUp() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
   [helper_ release];
   helper_ = nil;
 }
 
 void ShellLoginDialog::PlatformRequestCancelled() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
   [helper_ cancel];
 }