ProcessLaunchInfo: remove Debugger reference

Summary:
The Debuffer object was being used in "GetListenerForProcess" to provide
a default listener object if one was not specified in the launch_info
object.

Since all the callers of this function immediately passed the result to
Target::CreateProcess, it was easy to move this logic there instead.

This brings us one step closer towards being able to move the LaunchInfo
classes to the Host layer (which is there the launching code that
consumes them lives).

Reviewers: zturner, jingham, teemperor

Subscribers: lldb-commits

Differential Revision: https://reviews.llvm.org/D56174

llvm-svn: 350510

lldb/source/Target/Target.cpp

@@ -194,6 +194,8 @@ void Target::DeleteCurrentProcess() {
 const lldb::ProcessSP &Target::CreateProcess(ListenerSP listener_sp,
                                              llvm::StringRef plugin_name,
                                              const FileSpec *crash_file) {
+  if (!listener_sp)
+    listener_sp = GetDebugger().GetListener();
   DeleteCurrentProcess();
   m_process_sp = Process::FindPlugin(shared_from_this(), plugin_name,
                                      listener_sp, crash_file);
@@ -2884,8 +2886,7 @@ Status Target::Launch(ProcessLaunchInfo &launch_info, Stream *stream) {
     } else {
       // Use a Process plugin to construct the process.
       const char *plugin_name = launch_info.GetProcessPluginName();
-      CreateProcess(launch_info.GetListenerForProcess(debugger), plugin_name,
-                    nullptr);
+      CreateProcess(launch_info.GetListener(), plugin_name, nullptr);
     }
 
     // Since we didn't have a platform launch the process, launch it here.