Eliminate dependencies on assemblers and code stubs in precompiled runtime.

runtime/vm/flow_graph_compiler_arm.cc

Index: runtime/vm/flow_graph_compiler_arm.cc
diff --git a/runtime/vm/flow_graph_compiler_arm.cc b/runtime/vm/flow_graph_compiler_arm.cc
index 37b2e1f6440c58c7cc9031bae07aa35aead42b2c..156ad34d515db35c7e05c0ec6bc2bfdeec724ab6 100644
--- a/runtime/vm/flow_graph_compiler_arm.cc
+++ b/runtime/vm/flow_graph_compiler_arm.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_ARM.
-#if defined(TARGET_ARCH_ARM)
+#if defined(TARGET_ARCH_ARM) && !defined(DART_PRECOMPILED_RUNTIME)
 
 #include "vm/flow_graph_compiler.h"
 
@@ -1862,4 +1862,4 @@ void ParallelMoveResolver::RestoreFpuScratch(FpuRegister reg) {
 
 }  // namespace dart
 
-#endif  // defined TARGET_ARCH_ARM
+#endif  // defined(TARGET_ARCH_ARM) && !defined(DART_PRECOMPILED_RUNTIME)