AIDL-ize InputManager IInputFlinger interface.

Use AIDL interface to define the IInputFlinger interface and replace
the manual interface.

Bug:155425003
Test: atest libgui_test, atest libinput_test.

Change-Id: Ibad036b8ceb3a3f5c6d58f8de4ea8c79379d29b5
diff --git a/libs/input/android/os/IInputFlinger.aidl b/libs/input/android/os/IInputFlinger.aidl
new file mode 100644
index 0000000..8ff9dae
--- /dev/null
+++ b/libs/input/android/os/IInputFlinger.aidl
@@ -0,0 +1,30 @@
+/**
+ * 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.
+ */
+
+package android.os;
+
+import android.InputChannelInfo;
+import android.InputWindowInfo;
+import android.os.ISetInputWindowsListener;
+
+/** @hide */
+interface IInputFlinger
+{
+    void setInputWindows(in InputWindowInfo[] inputHandles,
+            in @nullable ISetInputWindowsListener setInputWindowsListener);
+    void registerInputChannel(in InputChannelInfo info);
+    void unregisterInputChannel(in InputChannelInfo info);
+}