Create api_domain module type and its bp2build converter

This module does not have any build actions in Soong yet. It will be
converted to a Bazel target using bp2build, and API export will be run
on the generated Bazel target

Test: go test ./bp2build
Test: TH
Change-Id: I76df32bd9f23b60e746b2700af07668a2ed74844

bp2build/api_domain_conversion_test.go

@@ -0,0 +1,68 @@
+// Copyright 2022 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package bp2build
+
+import (
+	"testing"
+
+	"android/soong/android"
+	"android/soong/cc"
+)
+
+func registerApiDomainModuleTypes(ctx android.RegistrationContext) {
+	android.RegisterApiDomainBuildComponents(ctx)
+	cc.RegisterNdkModuleTypes(ctx)
+	cc.RegisterLibraryBuildComponents(ctx)
+}
+
+func TestApiDomainContributionsTest(t *testing.T) {
+	bp := `
+	api_domain {
+		name: "system",
+		cc_api_contributions: [
+			"libfoo.ndk",
+			"libbar",
+		],
+	}
+	`
+	fs := map[string]string{
+		"libfoo/Android.bp": `
+		ndk_library {
+			name: "libfoo",
+		}
+		`,
+		"libbar/Android.bp": `
+		cc_library {
+			name: "libbar",
+		}
+		`,
+	}
+	expectedBazelTarget := MakeBazelTargetNoRestrictions(
+		"api_domain",
+		"system",
+		AttrNameToString{
+			"cc_api_contributions": `[
+        "//libfoo:libfoo.ndk.contribution",
+        "//libbar:libbar.contribution",
+    ]`,
+			"target_compatible_with": `["//build/bazel/platforms/os:android"]`,
+		},
+	)
+	RunBp2BuildTestCase(t, registerApiDomainModuleTypes, Bp2buildTestCase{
+		Blueprint:            bp,
+		ExpectedBazelTargets: []string{expectedBazelTarget},
+		Filesystem:           fs,
+	})
+}