Worklet: Move WorkletScriptLoader from MainThreadWorklet to MainThreadWorkletGlobalScope

third_party/WebKit/Source/core/loader/WorkletScriptLoader.h

Index: third_party/WebKit/Source/core/loader/WorkletScriptLoader.h
diff --git a/third_party/WebKit/Source/core/loader/WorkletScriptLoader.h b/third_party/WebKit/Source/core/loader/WorkletScriptLoader.h
index 633896f35b343536dc594786849fc9beedcb2d43..4785e7e7f12ea4e892a9028276426cb8fbdc0efb 100644
--- a/third_party/WebKit/Source/core/loader/WorkletScriptLoader.h
+++ b/third_party/WebKit/Source/core/loader/WorkletScriptLoader.h
@@ -54,6 +54,9 @@ class WorkletScriptLoader final
   // after Client::notifyWorkletScriptLoadingFinished() is called.
   bool WasScriptLoadSuccessful() const;
 
+  void set_request_id(int32_t request_id) { request_id_ = request_id; }
+  int32_t request_id() const { return request_id_; }
+
   DECLARE_TRACE();
 
  private:
@@ -66,6 +69,10 @@ class WorkletScriptLoader final
   Member<ResourceFetcher> fetcher_;
   Member<Client> client_;
 
+  // The client of this loader can freely use this field to identify a fetch
+  // request.
+  int32_t request_id_ = -1;
+
   bool was_script_load_successful_ = false;
   bool was_script_load_complete_ = false;
 };