Refactor how we report reload results

runtime/vm/isolate.h

Index: runtime/vm/isolate.h
diff --git a/runtime/vm/isolate.h b/runtime/vm/isolate.h
index 9c55cf3f9d745d06b5e53819cc902f629ef0834e..ed0c5b9f562d77618ebb567f3e5f41e20205b079 100644
--- a/runtime/vm/isolate.h
+++ b/runtime/vm/isolate.h
@@ -249,7 +249,8 @@ class Isolate : public BaseIsolate {
 
   // By default the reload context is deleted. This parameter allows
   // the caller to delete is separately if it is still needed.
-  void ReloadSources(bool force_reload,
+  bool ReloadSources(JSONStream* js,
+                     bool force_reload,
                      bool dont_delete_reload_context = false);
 
   bool MakeRunnable();
@@ -539,9 +540,6 @@ class Isolate : public BaseIsolate {
   RawError* sticky_error() const { return sticky_error_; }
   void clear_sticky_error();
 
-  RawError* sticky_reload_error() const { return sticky_reload_error_; }
-  void clear_sticky_reload_error();
-
   bool compilation_allowed() const { return compilation_allowed_; }
   void set_compilation_allowed(bool allowed) {
     compilation_allowed_ = allowed;
@@ -771,8 +769,6 @@ class Isolate : public BaseIsolate {
 
   RawError* sticky_error_;
 
-  RawError* sticky_reload_error_;
-
   // Background compilation.
   BackgroundCompiler* background_compiler_;
   intptr_t background_compiler_disabled_depth_;