Migrate away from AsyncChannel in NetworkAgent

Use two oneway binder interfaces instead.
The interfaces post messages to handlers as was implemented before, but
provide a more strictly defined interface, with less hops between
NetworkAgent, AsyncChannel, and ConnectivityService.

Test: atest FrameworksNetTests CtsNetTestCasesLatestSdk
Merged-In: Ica51d0179bcb3b4e314d2c3e85709aead6ca5657

Change-Id: Ica51d0179bcb3b4e314d2c3e85709aead6ca5657
diff --git a/framework/Android.bp b/framework/Android.bp
new file mode 100644
index 0000000..8db8d76
--- /dev/null
+++ b/framework/Android.bp
@@ -0,0 +1,29 @@
+//
+// Copyright (C) 2020 The Android Open Source Project
+//
+// 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.
+//
+
+// TODO: use a java_library in the bootclasspath instead
+filegroup {
+    name: "framework-connectivity-sources",
+    srcs: [
+        "src/**/*.java",
+        "src/**/*.aidl",
+    ],
+    path: "src",
+    visibility: [
+        "//frameworks/base",
+        "//packages/modules/Connectivity:__subpackages__",
+    ],
+}
\ No newline at end of file