Remove dead code

src/common/dwarf_cu_to_module.cc

Index: src/common/dwarf_cu_to_module.cc
===================================================================
--- src/common/dwarf_cu_to_module.cc	(revision 1087)
+++ src/common/dwarf_cu_to_module.cc	(working copy)
@@ -511,8 +511,7 @@
                     uint64 offset)
       : GenericDIEHandler(cu_context, parent_context, offset) { }
   bool EndAttributes();
-  DIEHandler *FindChildHandler(uint64 offset, enum DwarfTag tag,
-                               const AttributeList &attrs);
+  DIEHandler *FindChildHandler(uint64 offset, enum DwarfTag tag);
 
  private:
   DIEContext child_context_; // A context for our children.
@@ -525,8 +524,7 @@
 
 dwarf2reader::DIEHandler *DwarfCUToModule::NamedScopeHandler::FindChildHandler(
     uint64 offset,
-    enum DwarfTag tag,
-    const AttributeList &/*attrs*/) {
+    enum DwarfTag tag) {
   switch (tag) {
     case dwarf2reader::DW_TAG_subprogram:
       return new FuncHandler(cu_context_, &child_context_, offset);
@@ -667,8 +665,7 @@
 
 dwarf2reader::DIEHandler *DwarfCUToModule::FindChildHandler(
     uint64 offset,
-    enum DwarfTag tag,
-    const AttributeList &/*attrs*/) {
+    enum DwarfTag tag) {
   switch (tag) {
     case dwarf2reader::DW_TAG_subprogram:
       return new FuncHandler(cu_context_, child_context_, offset);
@@ -978,8 +975,7 @@
   return dwarf_version >= 2;
 }
 
-bool DwarfCUToModule::StartRootDIE(uint64 offset, enum DwarfTag tag,
-                                   const AttributeList& /*attrs*/) {
+bool DwarfCUToModule::StartRootDIE(uint64 offset, enum DwarfTag tag) {
   // We don't deal with partial compilation units (the only other tag
   // likely to be used for root DIE).
   return tag == dwarf2reader::DW_TAG_compile_unit;