ConsoleProcess: Uniform the common interface of QtcProcess

This is a preliminary step before merging ConsoleProcess
into QtcProcess.

Rename applicationPID() to processId().

Change-Id: I1f9a28e768505c08c2ca3529c2ff0432f2a62c78
Reviewed-by: hjk <hjk@qt.io>

src/plugins/debugger/terminal.cpp

@@ -230,7 +230,7 @@ void TerminalRunner::stop()
 
 void TerminalRunner::stubStarted()
 {
-    m_applicationPid = m_stubProc.applicationPID();
+    m_applicationPid = m_stubProc.processId();
     m_applicationMainThreadId = m_stubProc.applicationMainThreadID();
     reportStarted();
 }