[lldb] Make Reproducer compatbile with SubsystemRAII (NFC)

Make Reproducer compatbile with SubsystemRAII and use it in
LocateSymbolFileTest.

Author: JDevlieghere

lldb/include/lldb/Utility/Reproducer.h

@@ -197,6 +197,7 @@ class Reproducer {
   static Reproducer &Instance();
   static llvm::Error Initialize(ReproducerMode mode,
                                 llvm::Optional<FileSpec> root);
+  static void Initialize();
   static bool Initialized();
   static void Terminate();
 

lldb/source/Utility/Reproducer.cpp

@@ -73,6 +73,10 @@ llvm::Error Reproducer::Initialize(ReproducerMode mode,
   return Error::success();
 }
 
+void Reproducer::Initialize() {
+  llvm::cantFail(Initialize(repro::ReproducerMode::Off, llvm::None));
+}
+
 bool Reproducer::Initialized() { return InstanceImpl().operator bool(); }
 
 void Reproducer::Terminate() {

lldb/unittests/Symbol/LocateSymbolFileTest.cpp

@@ -21,29 +21,22 @@ using namespace lldb_private;
 namespace {
 class SymbolsTest : public ::testing::Test {
 public:
-  SubsystemRAII<FileSystem, HostInfo> subsystems;
+  SubsystemRAII<repro::Reproducer, FileSystem, HostInfo> subsystems;
 };
 } // namespace
 
 TEST_F(
     SymbolsTest,
     TerminateLocateExecutableSymbolFileForUnknownExecutableAndUnknownSymbolFile) {
-  EXPECT_THAT_ERROR(
-      repro::Reproducer::Initialize(repro::ReproducerMode::Off, llvm::None),
-      llvm::Succeeded());
   ModuleSpec module_spec;
   FileSpecList search_paths = Target::GetDefaultDebugFileSearchPaths();
   FileSpec symbol_file_spec =
       Symbols::LocateExecutableSymbolFile(module_spec, search_paths);
   EXPECT_TRUE(symbol_file_spec.GetFilename().IsEmpty());
-  repro::Reproducer::Terminate();
 }
 
 TEST_F(SymbolsTest,
        LocateExecutableSymbolFileForUnknownExecutableAndMissingSymbolFile) {
-  EXPECT_THAT_ERROR(
-      repro::Reproducer::Initialize(repro::ReproducerMode::Off, llvm::None),
-      llvm::Succeeded());
   ModuleSpec module_spec;
   // using a GUID here because the symbol file shouldn't actually exist on disk
   module_spec.GetSymbolFileSpec().SetFile(
@@ -52,5 +45,4 @@ TEST_F(SymbolsTest,
   FileSpec symbol_file_spec =
       Symbols::LocateExecutableSymbolFile(module_spec, search_paths);
   EXPECT_TRUE(symbol_file_spec.GetFilename().IsEmpty());
-  repro::Reproducer::Terminate();
 }