bluetooth: android: Initial basic Descriptors implementation.

device/bluetooth/android/java/src/org/chromium/device/bluetooth/ChromeBluetoothRemoteGattDescriptor.java

Index: device/bluetooth/android/java/src/org/chromium/device/bluetooth/ChromeBluetoothRemoteGattDescriptor.java
diff --git a/device/bluetooth/android/java/src/org/chromium/device/bluetooth/ChromeBluetoothRemoteGattDescriptor.java b/device/bluetooth/android/java/src/org/chromium/device/bluetooth/ChromeBluetoothRemoteGattDescriptor.java
new file mode 100644
index 0000000000000000000000000000000000000000..9d28c668e79134e31e9b58d92b6fd6d1ffb3b16a
--- /dev/null
+++ b/device/bluetooth/android/java/src/org/chromium/device/bluetooth/ChromeBluetoothRemoteGattDescriptor.java
@@ -0,0 +1,78 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.device.bluetooth;
+
+import org.chromium.base.Log;
+import org.chromium.base.annotations.CalledByNative;
+import org.chromium.base.annotations.JNINamespace;
+
+/**
+ * Exposes android.bluetooth.BluetoothGattDescriptor as necessary
+ * for C++ device::BluetoothRemoteGattDescriptorAndroid.
+ *
+ * Lifetime is controlled by device::BluetoothRemoteGattDescriptorAndroid.
+ */
+@JNINamespace("device")
+final class ChromeBluetoothRemoteGattDescriptor {
+    private static final String TAG = "Bluetooth";
+
+    // TODO(scheib): Will need c++ pointer eventually:
+    //     private long mNativeBluetoothRemoteGattDescriptorAndroid;
+    final Wrappers.BluetoothGattDescriptorWrapper mDescriptor;
+    final ChromeBluetoothDevice mChromeDevice;
+
+    private ChromeBluetoothRemoteGattDescriptor(
+            // TODO(scheib): Will need c++ pointer eventually:
+            //    long nativeBluetoothRemoteGattDescriptorAndroid,
+            Wrappers.BluetoothGattDescriptorWrapper descriptorWrapper,
+            ChromeBluetoothDevice chromeDevice) {
+        // TODO(scheib): Will need c++ pointer eventually:
+        //    mNativeBluetoothRemoteGattDescriptorAndroid =
+        //    nativeBluetoothRemoteGattDescriptorAndroid;
+        mDescriptor = descriptorWrapper;
+        mChromeDevice = chromeDevice;
+
+        mChromeDevice.mWrapperToChromeDescriptorsMap.put(descriptorWrapper, this);
+
+        Log.v(TAG, "ChromeBluetoothRemoteGattDescriptor created.");
+    }
+
+    /**
+     * Handles C++ object being destroyed.
+     */
+    @CalledByNative
+    private void onBluetoothRemoteGattDescriptorAndroidDestruction() {
+        Log.v(TAG, "ChromeBluetoothRemoteGattDescriptor Destroyed.");
+        // TODO(scheib): Will need c++ pointer eventually:
+        //    mNativeBluetoothRemoteGattDescriptorAndroid = 0;
+        mChromeDevice.mWrapperToChromeDescriptorsMap.remove(mDescriptor);
+    }
+
+    // ---------------------------------------------------------------------------------------------
+    // BluetoothRemoteGattDescriptorAndroid methods implemented in java:
+
+    // Implements BluetoothRemoteGattDescriptorAndroid::Create.
+    // TODO(http://crbug.com/505554): Replace 'Object' with specific type when JNI fixed.
+    @CalledByNative
+    private static ChromeBluetoothRemoteGattDescriptor create(
+            // TODO(scheib): Will need c++ pointer eventually:
+            //    long nativeBluetoothRemoteGattDescriptorAndroid,
+            Object bluetoothGattDescriptorWrapper, Object chromeDevice) {

[Jeffrey Yasskin, 2016/01/12 21:53:53]

Can you use ChromeBluetoothDevice here? I thought the JNI bug was only for
nested types.

[scheib, 2016/01/12 23:16:55]

Done - Yep, fixed that and the name as well.

+        return new ChromeBluetoothRemoteGattDescriptor(
+                // TODO(scheib): Will need c++ pointer eventually:
+                //    nativeBluetoothRemoteGattDescriptorAndroid,
+                (Wrappers.BluetoothGattDescriptorWrapper) bluetoothGattDescriptorWrapper,
+                (ChromeBluetoothDevice) chromeDevice);
+    }
+
+    // Implements BluetoothRemoteGattDescriptorAndroid::GetUUID.
+    @CalledByNative
+    private String getUUID() {
+        return mDescriptor.getUuid().toString();
+    }
+
+    // ---------------------------------------------------------------------------------------------
+    // BluetoothAdapterDevice C++ methods declared for access from java:

[Jeffrey Yasskin, 2016/01/12 21:53:53]

Remove this section boundary.

[scheib, 2016/01/12 23:16:55]

Done.

+}