Revert "Resubmit "Support embedding natvis files in PDBs.""

This is still failing on a different bot this time due to some
issue related to hashing absolute paths.  Reverting until I can
figure it out.

llvm-svn: 328014
diff --git a/llvm/lib/DebugInfo/CodeView/DebugCrossImpSubsection.cpp b/llvm/lib/DebugInfo/CodeView/DebugCrossImpSubsection.cpp
index 9a3d3e3..88c0076 100644
--- a/llvm/lib/DebugInfo/CodeView/DebugCrossImpSubsection.cpp
+++ b/llvm/lib/DebugInfo/CodeView/DebugCrossImpSubsection.cpp
@@ -80,13 +80,13 @@
     Ids.push_back(&M);
 
   std::sort(Ids.begin(), Ids.end(), [this](const T &L1, const T &L2) {
-    return Strings.getIdForString(L1->getKey()) <
-           Strings.getIdForString(L2->getKey());
+    return Strings.getStringId(L1->getKey()) <
+           Strings.getStringId(L2->getKey());
   });
 
   for (const auto &Item : Ids) {
     CrossModuleImport Imp;
-    Imp.ModuleNameOffset = Strings.getIdForString(Item->getKey());
+    Imp.ModuleNameOffset = Strings.getStringId(Item->getKey());
     Imp.Count = Item->getValue().size();
     if (auto EC = Writer.writeObject(Imp))
       return EC;