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

runtime/vm/runtime_entry_arm.cc

Index: runtime/vm/runtime_entry_arm.cc
diff --git a/runtime/vm/runtime_entry_arm.cc b/runtime/vm/runtime_entry_arm.cc
index 06955ad153788cd87534bf3f4e6c2a7ff41c3019..7bfc3b9f49dc04dcc4ab49718fb250d376a14f9e 100644
--- a/runtime/vm/runtime_entry_arm.cc
+++ b/runtime/vm/runtime_entry_arm.cc
@@ -36,6 +36,7 @@ uword RuntimeEntry::GetEntryPoint() const {
   return entry;
 }
 
+#if !defined(DART_PRECOMPILED_RUNTIME)
 // Generate code to call into the stub which will call the runtime
 // function. Input for the stub is as follows:
 //   SP : points to the arguments and return value array.
@@ -53,6 +54,7 @@ void RuntimeEntry::Call(Assembler* assembler, intptr_t argument_count) const {
     __ BranchLinkToRuntime();
   }
 }
+#endif  // !defined(DART_PRECOMPILED_RUNTIME)
 
 }  // namespace dart