rename getFullFilePos -> getFileOffset.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63097 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Driver/CacheTokens.cpp b/Driver/CacheTokens.cpp
index 5409a64..c64797e 100644
--- a/Driver/CacheTokens.cpp
+++ b/Driver/CacheTokens.cpp
@@ -159,7 +159,7 @@
   else
     Emit32(ResolveID(T.getIdentifierInfo()));
     
-  Emit32(PP.getSourceManager().getFullFilePos(T.getLocation()));
+  Emit32(PP.getSourceManager().getFileOffset(T.getLocation()));
 }
 
 namespace {