Revert "Revert "Basic structural redefinition support""

This reverts commit 5a2301d897294ff4ee6de71f459dc2566dc3fa1a.

Bug: 134162467

Reason for revert: Relanding as unclear if issue is due to topic.

Change-Id: Ib1d1cf2e9132e30c9649b760ae9ae2d8ceacf843
diff --git a/runtime/jit/jit_code_cache.h b/runtime/jit/jit_code_cache.h
index 64607b6..154700f 100644
--- a/runtime/jit/jit_code_cache.h
+++ b/runtime/jit/jit_code_cache.h
@@ -274,6 +274,10 @@
       REQUIRES(!Locks::jit_lock_)
       REQUIRES_SHARED(Locks::mutator_lock_);
 
+  void InvalidateAllCompiledCode()
+      REQUIRES(!Locks::jit_lock_)
+      REQUIRES_SHARED(Locks::mutator_lock_);
+
   void InvalidateCompiledCodeFor(ArtMethod* method, const OatQuickMethodHeader* code)
       REQUIRES(!Locks::jit_lock_)
       REQUIRES_SHARED(Locks::mutator_lock_);