Improve wording of progress update.

... assuming that nobody outside of LLDB developers knows what a
"compile unit import" is.

Author: adrian-prantl

lldb/source/Plugins/TypeSystem/Swift/SwiftASTContext.cpp

@@ -8829,9 +8829,9 @@ bool SwiftASTContext::GetCompileUnitImportsImpl(
   if (cu_imports.size() == 0)
     return true;
 
-  Progress progress("Getting Swift compile unit imports",
-                    compile_unit->GetPrimaryFile().GetFilename().GetCString(),
-                    cu_imports.size());
+  std::string category = "Importing Swift module dependencies for ";
+  category += compile_unit->GetPrimaryFile().GetFilename();
+  Progress progress(category, "", cu_imports.size());
   size_t completion = 0;
   for (const SourceModule &module : cu_imports) {
     progress.Increment(++completion, module.path.back().GetStringRef().str());

lldb/test/API/functionalities/progress_reporting/swift_progress_reporting/TestSwiftProgressReporting.py

@@ -38,14 +38,16 @@ def test_swift_progress_report(self):
             "Loading Swift module",
             "Importing modules used in expression",
             "Setting up Swift reflection",
-            "Getting Swift compile unit imports",
+            "Importing Swift module dependencies for main.swift",
             "Importing Swift modules",
             "Importing Swift standard library",
         ]
 
         while len(beacons):
             event = lldbutil.fetch_next_event(self, self.listener, self.broadcaster)
             ret_args = lldb.SBDebugger.GetProgressFromEvent(event)
+            if self.TraceOn():
+                print(ret_args[0])
 
             for beacon in beacons:
                 if beacon in ret_args[0]: