Add support for native bridge trait

Adds a native bridge trait that if required will cause a
cc_library_header module to generate a cc_prebuilt_library_headers with
native_bridge_supported: true. It will fail if the cc_library_header's
native bridge variant would produce native bridge specific properties,
distinct from the other architecture variants, in the generated
cc_prebuilt_library_headers.

Bug: 195754365
Test: m nothing
Change-Id: I282fbb9095de6c6af57cca4eb4260e2c6c2da8cc

cc/native_bridge_sdk_trait.go

@@ -0,0 +1,33 @@
+// Copyright 2021 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 cc
+
+import "android/soong/android"
+
+// This file contains support for the native bridge sdk trait.
+
+func init() {
+	android.RegisterSdkMemberTrait(nativeBridgeSdkTrait)
+}
+
+type nativeBridgeSdkTraitStruct struct {
+	android.SdkMemberTraitBase
+}
+
+var nativeBridgeSdkTrait android.SdkMemberTrait = &nativeBridgeSdkTraitStruct{
+	SdkMemberTraitBase: android.SdkMemberTraitBase{
+		PropertyName: "native_bridge_support",
+	},
+}