Use OutputFilesProvider on global_compat_config

In the context of incremental soong, the output files
inter-module-communication will be through OutputFilesProvider.
The OutputFileProducer interface will be deprecated.

Test: CI
Bug: 339477385
Change-Id: I6deb4a005876848f28a5b823a712d9eea33a44e6

java/platform_compat_config.go

@@ -15,7 +15,6 @@
 package java
 
 import (
-	"fmt"
 	"path/filepath"
 
 	"android/soong/android"
@@ -290,32 +289,23 @@ type globalCompatConfig struct {
 	android.ModuleBase
 
 	properties globalCompatConfigProperties
-
-	outputFilePath android.OutputPath
 }
 
 func (c *globalCompatConfig) GenerateAndroidBuildActions(ctx android.ModuleContext) {
 	filename := String(c.properties.Filename)
 
 	inputPath := platformCompatConfigPath(ctx)
-	c.outputFilePath = android.PathForModuleOut(ctx, filename).OutputPath
+	outputFilePath := android.PathForModuleOut(ctx, filename).OutputPath
 
 	// This ensures that outputFilePath has the correct name for others to
 	// use, as the source file may have a different name.
 	ctx.Build(pctx, android.BuildParams{
 		Rule:   android.Cp,
-		Output: c.outputFilePath,
+		Output: outputFilePath,
 		Input:  inputPath,
 	})
-}
 
-func (h *globalCompatConfig) OutputFiles(tag string) (android.Paths, error) {
-	switch tag {
-	case "":
-		return android.Paths{h.outputFilePath}, nil
-	default:
-		return nil, fmt.Errorf("unsupported module reference tag %q", tag)
-	}
+	ctx.SetOutputFiles(android.Paths{outputFilePath}, "")
 }
 
 // global_compat_config provides access to the merged compat config xml file generated by the build.