Generalize atomic_method_ref_map to support dex references

Generalize atomic method ref map to support dex references instead
of only method references.

The goal is to use this in a future CL to replace compiled_classes_.

Test: test-art-host

Change-Id: Ic6d1e619584f790eea68f5160fa0fcd664524cd7
diff --git a/compiler/driver/compiler_driver.h b/compiler/driver/compiler_driver.h
index e9e7378..a3272d3 100644
--- a/compiler/driver/compiler_driver.h
+++ b/compiler/driver/compiler_driver.h
@@ -39,7 +39,7 @@
 #include "os.h"
 #include "safe_map.h"
 #include "thread_pool.h"
-#include "utils/atomic_method_ref_map.h"
+#include "utils/atomic_dex_ref_map.h"
 #include "utils/dex_cache_arrays_layout.h"
 
 namespace art {
@@ -489,7 +489,7 @@
   mutable Mutex compiled_classes_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER;
   ClassStateTable compiled_classes_ GUARDED_BY(compiled_classes_lock_);
 
-  typedef AtomicMethodRefMap<CompiledMethod*> MethodTable;
+  typedef AtomicDexRefMap<CompiledMethod*> MethodTable;
 
  private:
   // All method references that this compiler has compiled.