DWARF: Remove accessors that parse the whole line table section in one go, this can't possibly work.

The address size is specified by the compile unit associated with a line table, there is no global address size.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139835 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/DebugInfo/DWARFContext.h b/lib/DebugInfo/DWARFContext.h
index ead169e..687e5fa 100644
--- a/lib/DebugInfo/DWARFContext.h
+++ b/lib/DebugInfo/DWARFContext.h
@@ -59,8 +59,9 @@
   /// Get a pointer to the parsed DebugAranges object.
   const DWARFDebugAranges *getDebugAranges();
 
-  /// Get a pointer to the parsed DWARFDebugLine object.
-  const DWARFDebugLine *getDebugLine();
+  /// Get a pointer to a parsed line table corresponding to a compile unit.
+  const DWARFDebugLine::LineTable *
+  getLineTableForCompileUnit(DWARFCompileUnit *cu);
 
   bool isLittleEndian() const { return IsLittleEndian; }