[llvm-pdbdump] Abstract some of the YAML/Raw printing code.

There is a lot of duplicate code for printing line info between
YAML and the raw output printer.  This introduces a base class
that can be shared between the two, and makes some minor
cleanups in the process.

llvm-svn: 301728
diff --git a/llvm/lib/DebugInfo/PDB/Native/DbiModuleDescriptor.cpp b/llvm/lib/DebugInfo/PDB/Native/DbiModuleDescriptor.cpp
index e04388b..dabcc34 100644
--- a/llvm/lib/DebugInfo/PDB/Native/DbiModuleDescriptor.cpp
+++ b/llvm/lib/DebugInfo/PDB/Native/DbiModuleDescriptor.cpp
@@ -57,8 +57,8 @@
   return Layout->SymBytes;
 }
 
-uint32_t DbiModuleDescriptor::getLineInfoByteSize() const {
-  return Layout->LineBytes;
+uint32_t DbiModuleDescriptor::getC11LineInfoByteSize() const {
+  return Layout->C11Bytes;
 }
 
 uint32_t DbiModuleDescriptor::getC13LineInfoByteSize() const {