Revert^2 "ART: Refactor typedef to using"

This reverts commit ee07743e03042c2ca36e0c9513847a9e7d2509f1.

Reason for revert: fixed attributes.

Bug: 32619234
Test: m test-art-host
Test: m test-art-target-gtest-unstarted_runtime_test
Change-Id: I6f0a775adfdf6ecd132b470f7c5446e949872e20
diff --git a/runtime/base/mutex.cc b/runtime/base/mutex.cc
index 28b2912..b2ddff3 100644
--- a/runtime/base/mutex.cc
+++ b/runtime/base/mutex.cc
@@ -227,18 +227,15 @@
       // No mutexes have been created yet during at startup.
       return;
     }
-    typedef std::set<BaseMutex*>::const_iterator It;
     os << "(Contended)\n";
-    for (It it = all_mutexes->begin(); it != all_mutexes->end(); ++it) {
-      BaseMutex* mutex = *it;
+    for (const BaseMutex* mutex : *all_mutexes) {
       if (mutex->HasEverContended()) {
         mutex->Dump(os);
         os << "\n";
       }
     }
     os << "(Never contented)\n";
-    for (It it = all_mutexes->begin(); it != all_mutexes->end(); ++it) {
-      BaseMutex* mutex = *it;
+    for (const BaseMutex* mutex : *all_mutexes) {
       if (!mutex->HasEverContended()) {
         mutex->Dump(os);
         os << "\n";