Change over IgnoreReturn to IgnoreResult. remove IgnoreReturn.

chrome/browser/profiles/profile_manager_unittest.cc

Index: chrome/browser/profiles/profile_manager_unittest.cc
diff --git a/chrome/browser/profiles/profile_manager_unittest.cc b/chrome/browser/profiles/profile_manager_unittest.cc
index 5f240119c9c32c339427cc8a85ccd2c6b3d19b5f..7d598c3cb3cea0b0c2c219d811904aca3b1f7290 100644
--- a/chrome/browser/profiles/profile_manager_unittest.cc
+++ b/chrome/browser/profiles/profile_manager_unittest.cc
@@ -67,8 +67,7 @@ class ProfileManager : public ::ProfileManagerWithoutInit {
     // This is safe while all file operations are done on the FILE thread.
     BrowserThread::PostTask(
         BrowserThread::FILE, FROM_HERE,
-        base::IgnoreReturn<bool>(base::Bind(&file_util::CreateDirectory,
-                                            path)));
+        base::Bind(base::IgnoreResult(&file_util::CreateDirectory), path));
 
     return new TestingProfile(path, this);
   }