Convert ModuleProvder to generic providers API

Convert all of the callers of ModuleProvider/ModuleHasProvider to use the
type-safe android.SingletonModuleProvider API.

Bug: 316410648
Test: builds
Change-Id: I6f11638546b64749e451cebbf33140248dc1d193
diff --git a/testing/all_code_metadata.go b/testing/all_code_metadata.go
index 16d7aae..12aa7b5 100644
--- a/testing/all_code_metadata.go
+++ b/testing/all_code_metadata.go
@@ -21,14 +21,9 @@
 
 	ctx.VisitAllModules(
 		func(module android.Module) {
-			if !ctx.ModuleHasProvider(module, CodeMetadataProviderKey) {
-				return
+			if metadata, ok := android.SingletonModuleProvider(ctx, module, CodeMetadataProviderKey); ok {
+				intermediateMetadataPaths = append(intermediateMetadataPaths, metadata.IntermediatePath)
 			}
-			intermediateMetadataPaths = append(
-				intermediateMetadataPaths, ctx.ModuleProvider(
-					module, CodeMetadataProviderKey,
-				).(CodeMetadataProviderData).IntermediatePath,
-			)
 		},
 	)
 
diff --git a/testing/all_test_specs.go b/testing/all_test_specs.go
index 9d4645b..b035435 100644
--- a/testing/all_test_specs.go
+++ b/testing/all_test_specs.go
@@ -21,10 +21,9 @@
 	var intermediateMetadataPaths android.Paths
 
 	ctx.VisitAllModules(func(module android.Module) {
-		if !ctx.ModuleHasProvider(module, TestSpecProviderKey) {
-			return
+		if metadata, ok := android.SingletonModuleProvider(ctx, module, TestSpecProviderKey); ok {
+			intermediateMetadataPaths = append(intermediateMetadataPaths, metadata.IntermediatePath)
 		}
-		intermediateMetadataPaths = append(intermediateMetadataPaths, ctx.ModuleProvider(module, TestSpecProviderKey).(TestSpecProviderData).IntermediatePath)
 	})
 
 	rspFile := android.PathForOutput(ctx, fileContainingFilePaths)