Put helper classes in an anonymous namespace.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185303 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Format/UnwrappedLineParser.cpp b/lib/Format/UnwrappedLineParser.cpp
index e1c1468..1c2a8fe 100644
--- a/lib/Format/UnwrappedLineParser.cpp
+++ b/lib/Format/UnwrappedLineParser.cpp
@@ -30,6 +30,8 @@
   virtual FormatToken *setPosition(unsigned Position) = 0;
 };
 
+namespace {
+
 class ScopedDeclarationState {
 public:
   ScopedDeclarationState(UnwrappedLine &Line, std::vector<bool> &Stack,
@@ -114,6 +116,8 @@
   FormatToken *Token;
 };
 
+} // end anonymous namespace
+
 class ScopedLineState {
 public:
   ScopedLineState(UnwrappedLineParser &Parser,
@@ -145,6 +149,8 @@
   UnwrappedLine *PreBlockLine;
 };
 
+namespace {
+
 class IndexedTokenSource : public FormatTokenSource {
 public:
   IndexedTokenSource(ArrayRef<FormatToken *> Tokens)
@@ -170,6 +176,8 @@
   int Position;
 };
 
+} // end anonymous namespace
+
 UnwrappedLineParser::UnwrappedLineParser(const FormatStyle &Style,
                                          ArrayRef<FormatToken *> Tokens,
                                          UnwrappedLineConsumer &Callback)