Teach treeshaker about new cached functions and classes.

runtime/vm/object_store.h

Index: runtime/vm/object_store.h
diff --git a/runtime/vm/object_store.h b/runtime/vm/object_store.h
index 41076fe5c64c5447b0ce9a70851caf4e18f00b1c..c303c6c91836a1d8c3bd45ae6dd0ea402331a639 100644
--- a/runtime/vm/object_store.h
+++ b/runtime/vm/object_store.h
@@ -432,12 +432,21 @@ class ObjectStore {
   RawFunction* simple_instance_of_function() const {
     return simple_instance_of_function_;
   }
+  void set_simple_instance_of_function(const Function& value) {
+    simple_instance_of_function_ = value.raw();
+  }
   RawFunction* simple_instance_of_true_function() const {
     return simple_instance_of_true_function_;
   }
+  void set_simple_instance_of_true_function(const Function& value) {
+    simple_instance_of_true_function_ = value.raw();
+  }
   RawFunction* simple_instance_of_false_function() const {
     return simple_instance_of_false_function_;
   }
+  void set_simple_instance_of_false_function(const Function& value) {
+    simple_instance_of_false_function_ = value.raw();
+  }
   RawFunction* async_clear_thread_stack_trace() const {
     return async_clear_thread_stack_trace_;
   }
@@ -450,28 +459,24 @@ class ObjectStore {
   }
   void set_async_set_thread_stack_trace(const Function& func) {
     async_set_thread_stack_trace_ = func.raw();
-    ASSERT(async_set_thread_stack_trace_ != Object::null());
   }
   RawFunction* async_star_move_next_helper() const {
     return async_star_move_next_helper_;
   }
   void set_async_star_move_next_helper(const Function& func) {
     async_star_move_next_helper_ = func.raw();
-    ASSERT(async_star_move_next_helper_ != Object::null());
   }
   RawFunction* complete_on_async_return() const {
     return complete_on_async_return_;
   }
   void set_complete_on_async_return(const Function& func) {
     complete_on_async_return_ = func.raw();
-    ASSERT(complete_on_async_return_ != Object::null());
   }
   RawClass* async_star_stream_controller() const {
     return async_star_stream_controller_;
   }
   void set_async_star_stream_controller(const Class& cls) {
     async_star_stream_controller_ = cls.raw();
-    ASSERT(async_star_stream_controller_ != Object::null());
   }
 
   // Visit all object pointers.