bluetooth: android: Initial BluetoothDeviceAndroid implementation.

device/bluetooth/bluetooth_adapter_android.h

Index: device/bluetooth/bluetooth_adapter_android.h
diff --git a/device/bluetooth/bluetooth_adapter_android.h b/device/bluetooth/bluetooth_adapter_android.h
index 52e257d8c1f40d80f71db4ed868361e1112720b1..e41a71fc634f0b3b805117439b284fe1d80df57c 100644
--- a/device/bluetooth/bluetooth_adapter_android.h
+++ b/device/bluetooth/bluetooth_adapter_android.h
@@ -27,7 +27,9 @@ namespace device {
 // technical reason they can not be supported should a need arrise.
 //
 // BluetoothAdapterAndroid is reference counted, and owns the lifetime of the
-// Java class BluetoothAdapter via j_adapter_.
+// Java class BluetoothAdapter via j_adapter_. The adapter also owns a tree of
+// additional C++ objects (Devices, Services, Characteristics, Descriptors),
+// with each C++ object owning its associated Java class.
 class DEVICE_BLUETOOTH_EXPORT BluetoothAdapterAndroid final
     : public BluetoothAdapter {
  public:
@@ -81,7 +83,15 @@ class DEVICE_BLUETOOTH_EXPORT BluetoothAdapterAndroid final
       const CreateAdvertisementErrorCallback& error_callback) override;
 
   // Handles a scan error event by invalidating all discovery sessions.
-  void OnScanFailed(JNIEnv* env, jobject obj);
+  void OnScanFailed(JNIEnv* env, jobject caller);
+
+  // Creates or updates device with advertised UUID information when a device is
+  // discovered during a scan.
+  void CreateOrUpdateDeviceOnScan(JNIEnv* env,
+                                  jobject caller,
+                                  const jstring& address,
+                                  jobject bluetooth_device_wrapper,
+                                  jobject advertised_uuids);
 
  protected:
   BluetoothAdapterAndroid();