bluetooth: android: register for adapter on/off events.

device/bluetooth/test/bluetooth_test_android.h

Index: device/bluetooth/test/bluetooth_test_android.h
diff --git a/device/bluetooth/test/bluetooth_test_android.h b/device/bluetooth/test/bluetooth_test_android.h
index 3fb3a3348ba9509425baf8c51948e98234596928..b855eca542a61f2bd99f5d04a38ed7d2f5187cd1 100644
--- a/device/bluetooth/test/bluetooth_test_android.h
+++ b/device/bluetooth/test/bluetooth_test_android.h
@@ -118,6 +118,12 @@ class BluetoothTestAndroid : public BluetoothTestBase {
       const base::android::JavaParamRef<jobject>& caller,
       const base::android::JavaParamRef<jbyteArray>& value);
 
+  // Records that Java FakeBluetoothAdapter onAdapterStateChanged was called.
+  void OnFakeAdapterStateChanged(
+      JNIEnv* env,
+      const base::android::JavaParamRef<jobject>& caller,
+      const bool powered);
+
   base::android::ScopedJavaGlobalRef<jobject> j_fake_bluetooth_adapter_;
 
   int gatt_open_connections_ = 0;