Camera: ProCamera2Client implement createStream,createDefaultRequest

The StreamingImage unit test should now work when TEST_DISPLAY_SECS is set.

Change-Id: I9cf3ad5bd5a76096ab21bd39e631d636c4ff3d3f
diff --git a/services/camera/libcameraservice/ProCamera2Client.h b/services/camera/libcameraservice/ProCamera2Client.h
index 8f76819..ed42e22 100644
--- a/services/camera/libcameraservice/ProCamera2Client.h
+++ b/services/camera/libcameraservice/ProCamera2Client.h
@@ -58,6 +58,7 @@
                                        int* streamId);
 
     // Create a request object from a template.
+    // -- Caller owns the newly allocated metadata
     virtual status_t      createDefaultRequest(int templateId,
                                                /*out*/
                                                camera_metadata** request);