unique_fd is passed by value in AIDL interfaces

FileDescriptor type in AIDL was translated into const unique_fd& in C++.
Now, it is unique_fd, i.e. passed by value, to make it easier to keep it
beyond the scope of the call.

Bug: 144943748
Test: m
Change-Id: I2b87761401361f9cf96cdda070f26e70a5c6c935
diff --git a/cmds/incidentd/src/IncidentService.h b/cmds/incidentd/src/IncidentService.h
index fb013d0..b2c7f23 100644
--- a/cmds/incidentd/src/IncidentService.h
+++ b/cmds/incidentd/src/IncidentService.h
@@ -121,9 +121,9 @@
 
     virtual Status reportIncidentToStream(const IncidentReportArgs& args,
                                           const sp<IIncidentReportStatusListener>& listener,
-                                          const unique_fd& stream);
+                                          unique_fd stream);
 
-    virtual Status reportIncidentToDumpstate(const unique_fd& stream,
+    virtual Status reportIncidentToDumpstate(unique_fd stream,
             const sp<IIncidentReportStatusListener>& listener);
 
     virtual Status systemRunning();