Add a function to Dumpstate service to trigger a bugreport

Add startBugreport() to Dumpstate interface. This is part of
proper binderization of Dumpstate.

The function is not implemented yet.

BUG: 111441001
Test: m -j dumpstate
Test: adb shell /data/nativetest64/dumpstate_test/dumpstate_test
Change-Id: I484215067e5653d2e2f4e34bd9a9b569d426f411
diff --git a/cmds/dumpstate/DumpstateService.h b/cmds/dumpstate/DumpstateService.h
index 7bca24a..131aff3 100644
--- a/cmds/dumpstate/DumpstateService.h
+++ b/cmds/dumpstate/DumpstateService.h
@@ -41,6 +41,9 @@
                                bool getSectionDetails,
                                sp<IDumpstateToken>* returned_token) override;
 
+    binder::Status startBugreport(int fd, const sp<IDumpstateListener>& listener,
+                                  const DumpstateOptions& options, int32_t* returned_id) override;
+
   private:
     Dumpstate& ds_;
     std::mutex lock_;