Rename SourceLocation::getFileLocWithOffset -> getLocWithOffset.

It already works (and is useful with) macro locs as well.

llvm-svn: 140057
diff --git a/clang/lib/Sema/DeclSpec.cpp b/clang/lib/Sema/DeclSpec.cpp
index 7278922..fad1199 100644
--- a/clang/lib/Sema/DeclSpec.cpp
+++ b/clang/lib/Sema/DeclSpec.cpp
@@ -890,7 +890,7 @@
     const char *SpecName = getSpecifierName(SC);
 
     SourceLocation SCLoc = getStorageClassSpecLoc();
-    SourceLocation SCEndLoc = SCLoc.getFileLocWithOffset(strlen(SpecName));
+    SourceLocation SCEndLoc = SCLoc.getLocWithOffset(strlen(SpecName));
 
     Diag(D, SCLoc, diag::err_friend_storage_spec)
       << SpecName