PPC: [debugger] simplify reloc info for debug break slots.

src/debug/ppc/debug-ppc.cc

Index: src/debug/ppc/debug-ppc.cc
diff --git a/src/debug/ppc/debug-ppc.cc b/src/debug/ppc/debug-ppc.cc
index 5f3225fe77f77e7ffcec80581cd2b7b3a905d16f..eb5f7c3b43e4021ff4c48d873020fdd70a39a433 100644
--- a/src/debug/ppc/debug-ppc.cc
+++ b/src/debug/ppc/debug-ppc.cc
@@ -24,12 +24,11 @@ void EmitDebugBreakSlot(MacroAssembler* masm) {
 }
 
 
-void DebugCodegen::GenerateSlot(MacroAssembler* masm, RelocInfo::Mode mode,
-                                int call_argc) {
+void DebugCodegen::GenerateSlot(MacroAssembler* masm, RelocInfo::Mode mode) {
   // Generate enough nop's to make space for a call instruction. Avoid emitting
   // the trampoline pool in the debug break slot code.
   Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm);
-  masm->RecordDebugBreakSlot(mode, call_argc);
+  masm->RecordDebugBreakSlot(mode);
   EmitDebugBreakSlot(masm);
 }