Debugger: Show progress indicator while updating locals.

Change-Id: I4b26cbe71f5936f367f9add2b3a6c812446835d8
Reviewed-by: Christian Stenger <christian.stenger@theqtcompany.com>
Reviewed-by: hjk <hjk@theqtcompany.com>

src/plugins/debugger/lldb/lldbengine.cpp

@@ -912,6 +912,7 @@ void LldbEngine::doUpdateLocals(UpdateParameters params)
     m_lastDebuggableCommand = cmd;
     m_lastDebuggableCommand.args.replace("\"passexceptions\":0", "\"passexceptions\":1");
 
+    watchHandler()->updateRequested();
     runCommand(cmd);
 
     reloadRegisters();
@@ -1009,6 +1010,7 @@ void LldbEngine::refreshLocals(const GdbMi &vars)
     }
 
     handler->purgeOutdatedItems(toDelete);
+    handler->updateFinished();
 
     DebuggerToolTipManager::updateEngine(this);
  }