bluetooth: android: Confirm the notify session after the descriptor has been written.

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

Index: device/bluetooth/android/java/src/org/chromium/device/bluetooth/ChromeBluetoothDevice.java
diff --git a/device/bluetooth/android/java/src/org/chromium/device/bluetooth/ChromeBluetoothDevice.java b/device/bluetooth/android/java/src/org/chromium/device/bluetooth/ChromeBluetoothDevice.java
index 88e290f41d7fb6d751fbce861735f768dfecd92a..b7fd6a1d20a13303ea64a4666bfd2c94a8962ede 100644
--- a/device/bluetooth/android/java/src/org/chromium/device/bluetooth/ChromeBluetoothDevice.java
+++ b/device/bluetooth/android/java/src/org/chromium/device/bluetooth/ChromeBluetoothDevice.java
@@ -255,6 +255,44 @@ final class ChromeBluetoothDevice {
                 }
             });
         }
+
+        @Override
+        public void onDescriptorRead(
+                final Wrappers.BluetoothGattDescriptorWrapper descriptor, final int status) {
+            ThreadUtils.runOnUiThread(new Runnable() {
+                @Override
+                public void run() {
+                    ChromeBluetoothRemoteGattDescriptor chromeDescriptor =
+                            mWrapperToChromeDescriptorsMap.get(descriptor);
+                    if (chromeDescriptor == null) {
+                        // Android events arriving with no Chrome object is expected rarely: only
+                        // when the event races object destruction.
+                        Log.v(TAG, "onDescriptorRead when chromeDescriptor == null.");
+                    } else {
+                        chromeDescriptor.onDescriptorRead(status);
+                    }
+                }
+            });
+        }
+
+        @Override
+        public void onDescriptorWrite(
+                final Wrappers.BluetoothGattDescriptorWrapper descriptor, final int status) {
+            ThreadUtils.runOnUiThread(new Runnable() {
+                @Override
+                public void run() {
+                    ChromeBluetoothRemoteGattDescriptor chromeDescriptor =
+                            mWrapperToChromeDescriptorsMap.get(descriptor);
+                    if (chromeDescriptor == null) {
+                        // Android events arriving with no Chrome object is expected rarely: only
+                        // when the event races object destruction.
+                        Log.v(TAG, "onDescriptorWrite when chromeDescriptor == null.");
+                    } else {
+                        chromeDescriptor.onDescriptorWrite(status);
+                    }
+                }
+            });
+        }
     }
 
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