libbinder: Add support for C++ Parcelable

Bug: 23600712
Test: compiles, integration tests for Java/C++ compatibility pass

Change-Id: I0919571919a3633350169ed5668bbb000da9691c
diff --git a/include/binder/Parcelable.h b/include/binder/Parcelable.h
new file mode 100644
index 0000000..faf0d34
--- /dev/null
+++ b/include/binder/Parcelable.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+#ifndef ANDROID_PARCELABLE_H
+#define ANDROID_PARCELABLE_H
+
+#include <vector>
+
+#include <utils/Errors.h>
+#include <utils/String16.h>
+
+namespace android {
+
+class Parcel;
+
+// Abstract interface of all parcelables.
+class Parcelable {
+public:
+    virtual ~Parcelable() = default;
+
+    // Write |this| parcelable to the given |parcel|.  Keep in mind that
+    // implementations of writeToParcel must be manually kept in sync
+    // with readFromParcel and the Java equivalent versions of these methods.
+    //
+    // Returns android::OK on success and an appropriate error otherwise.
+    virtual status_t writeToParcel(Parcel* parcel) const = 0;
+
+    // Read data from the given |parcel| into |this|.  After readFromParcel
+    // completes, |this| should have equivalent state to the object that
+    // wrote itself to the parcel.
+    //
+    // Returns android::OK on success and an appropriate error otherwise.
+    virtual status_t readFromParcel(const Parcel* parcel) = 0;
+};  // class Parcelable
+
+}  // namespace android
+
+#endif // ANDROID_PARCELABLE_H