(Camera)FrameProcessor: Refactor to share code with ProFrameProcessor

Change-Id: Ie8cd0df7caf83f9d0134f560ae31ab72f2f7d1fc
diff --git a/services/camera/libcameraservice/CameraDeviceBase.h b/services/camera/libcameraservice/CameraDeviceBase.h
index 8252af7..8c457d9 100644
--- a/services/camera/libcameraservice/CameraDeviceBase.h
+++ b/services/camera/libcameraservice/CameraDeviceBase.h
@@ -36,6 +36,11 @@
   public:
     virtual ~CameraDeviceBase();
 
+    /**
+     * The device's camera ID
+     */
+    virtual int      getId() const = 0;
+
     virtual status_t initialize(camera_module_t *module) = 0;
     virtual status_t disconnect() = 0;