Create a product variable for skipping apex contribution contents

This denylist will be used to ignore the prebuilt google apexes listed
in apex_contributions of vendor/google/build when building aosp products
in next.

Test: go build ./android
Bug: 308187268
Change-Id: Ib2c018a2aeda5578cf3f1a6a56253bf84850ba5f
Merged-In: Ib2c018a2aeda5578cf3f1a6a56253bf84850ba5f

android/apex_contributions.go

@@ -98,6 +98,10 @@ func (a *allApexContributions) DepsMutator(ctx BottomUpMutatorContext) {
 func (a *allApexContributions) SetPrebuiltSelectionInfoProvider(ctx BaseModuleContext) {
 	addContentsToProvider := func(p *PrebuiltSelectionInfoMap, m *apexContributions) {
 		for _, content := range m.Contents() {
+			// Skip any apexes that have been added to the product specific ignore list
+			if InList(content, ctx.Config().BuildIgnoreApexContributionContents()) {
+				continue
+			}
 			if !ctx.OtherModuleExists(content) && !ctx.Config().AllowMissingDependencies() {
 				ctx.ModuleErrorf("%s listed in apex_contributions %s does not exist\n", content, m.Name())
 			}

android/config.go

@@ -2015,3 +2015,7 @@ func (c *config) AllApexContributions() []string {
 	}
 	return ret
 }
+
+func (c *config) BuildIgnoreApexContributionContents() []string {
+	return c.productVariables.BuildIgnoreApexContributionContents
+}

android/variable.go

@@ -495,6 +495,8 @@ type ProductVariables struct {
 	BuildFlags map[string]string `json:",omitempty"`
 
 	BuildFromSourceStub *bool `json:",omitempty"`
+
+	BuildIgnoreApexContributionContents []string `json:",omitempty"`
 }
 
 type PartitionQualifiedVariablesType struct {