Callback API Change: Reimplement Bind(); support IgnoreResult, full currying, and use less types

base/file_util_proxy.cc

Index: base/file_util_proxy.cc
diff --git a/base/file_util_proxy.cc b/base/file_util_proxy.cc
index 9b51d34b9a88acef7b663ff59dd8f0c1070125b0..0873c9ccd5b3f61f7b2e84f75a8ed36c9ac6b1b9 100644
--- a/base/file_util_proxy.cc
+++ b/base/file_util_proxy.cc
@@ -112,7 +112,8 @@ class CreateOrOpenHelper {
   ~CreateOrOpenHelper() {
     if (file_handle_ != kInvalidPlatformFileValue) {
       message_loop_proxy_->PostTask(
-          FROM_HERE, base::Bind(close_task_, file_handle_));
+          FROM_HERE,
+          base::Bind(base::IgnoreResult(close_task_), file_handle_));
     }
   }