Camera: add webcam offline processing support

Test: CTS/VTS in follow up changes
Bug: 135142453
Change-Id: Ie95f22795f4807ed384443de0fffc65c5dde16d1
diff --git a/camera/device/3.6/default/Android.bp b/camera/device/3.6/default/Android.bp
index ce51185..a2ddebd 100644
--- a/camera/device/3.6/default/Android.bp
+++ b/camera/device/3.6/default/Android.bp
@@ -28,6 +28,7 @@
     srcs: [
         "ExternalCameraDevice.cpp",
         "ExternalCameraDeviceSession.cpp",
+        "ExternalCameraOfflineSession.cpp",
     ],
     shared_libs: [
         "libhidlbase",