Reapply "Eliminate dependencies on assemblers and code stubs in precompiled runtime."

runtime/vm/megamorphic_cache_table.cc

Index: runtime/vm/megamorphic_cache_table.cc
diff --git a/runtime/vm/megamorphic_cache_table.cc b/runtime/vm/megamorphic_cache_table.cc
index 514943f599d1e3ee0ad5d941a5b00c06fde2e10e..a8811c1a3293a87096ae4ffe239f882a58e4c800 100644
--- a/runtime/vm/megamorphic_cache_table.cc
+++ b/runtime/vm/megamorphic_cache_table.cc
@@ -48,6 +48,7 @@ RawFunction* MegamorphicCacheTable::miss_handler(Isolate* isolate) {
   return isolate->object_store()->megamorphic_miss_function();
 }
 
+#if !defined(DART_PRECOMPILED_RUNTIME)
 void MegamorphicCacheTable::InitMissHandler(Isolate* isolate) {
   // The miss handler for a class ID not found in the table is invoked as a
   // normal Dart function.
@@ -78,6 +79,7 @@ void MegamorphicCacheTable::InitMissHandler(Isolate* isolate) {
          Function::null());
   isolate->object_store()->SetMegamorphicMissHandler(code, function);
 }
+#endif  // !defined(DART_PRECOMPILED_RUNTIME)
 
 void MegamorphicCacheTable::PrintSizes(Isolate* isolate) {
   StackZone zone(Thread::Current());