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

runtime/vm/intrinsifier_x64.cc

Index: runtime/vm/intrinsifier_x64.cc
diff --git a/runtime/vm/intrinsifier_x64.cc b/runtime/vm/intrinsifier_x64.cc
index 2a0ffaf346571ce7fdb492cf5053b162f05772a4..0eb7d64db820bac0bb14a78b0758f1c56a86746b 100644
--- a/runtime/vm/intrinsifier_x64.cc
+++ b/runtime/vm/intrinsifier_x64.cc
@@ -3,7 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_X64.
-#if defined(TARGET_ARCH_X64) && !defined(DART_PRECOMPILED_RUNTIME)
+#if defined(TARGET_ARCH_X64)
 
 #include "vm/intrinsifier.h"
 
@@ -2225,4 +2225,4 @@ void Intrinsifier::SetAsyncThreadStackTrace(Assembler* assembler) {
 
 }  // namespace dart
 
-#endif  // defined(TARGET_ARCH_X64) && !defined(DART_PRECOMPILED_RUNTIME)
+#endif  // defined TARGET_ARCH_X64