[macro-assembler] Delete unused Increment/Decrement Counter versions

Bug: 
Change-Id: I62e95cebbc02ac867e396796f298b004f7f2ee4d
Reviewed-on: https://chromium-review.googlesource.com/707150Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48394}

src/ia32/macro-assembler-ia32.cc

@@ -1511,35 +1511,6 @@ void MacroAssembler::DecrementCounter(StatsCounter* counter, int value) {
 }
 
 
-void MacroAssembler::IncrementCounter(Condition cc,
-                                      StatsCounter* counter,
-                                      int value) {
-  DCHECK(value > 0);
-  if (FLAG_native_code_counters && counter->Enabled()) {
-    Label skip;
-    j(NegateCondition(cc), &skip);
-    pushfd();
-    IncrementCounter(counter, value);
-    popfd();
-    bind(&skip);
-  }
-}
-
-
-void MacroAssembler::DecrementCounter(Condition cc,
-                                      StatsCounter* counter,
-                                      int value) {
-  DCHECK(value > 0);
-  if (FLAG_native_code_counters && counter->Enabled()) {
-    Label skip;
-    j(NegateCondition(cc), &skip);
-    pushfd();
-    DecrementCounter(counter, value);
-    popfd();
-    bind(&skip);
-  }
-}
-
 void TurboAssembler::Assert(Condition cc, BailoutReason reason) {
   if (emit_debug_code()) Check(cc, reason);
 }

src/ia32/macro-assembler-ia32.h

@@ -672,8 +672,6 @@ class MacroAssembler : public TurboAssembler {
   void SetCounter(StatsCounter* counter, int value);
   void IncrementCounter(StatsCounter* counter, int value);
   void DecrementCounter(StatsCounter* counter, int value);
-  void IncrementCounter(Condition cc, StatsCounter* counter, int value);
-  void DecrementCounter(Condition cc, StatsCounter* counter, int value);
 
   // ---------------------------------------------------------------------------
   // String utilities.