Revert r18029.

src/arm/macro-assembler-arm.cc

Index: src/arm/macro-assembler-arm.cc
diff --git a/src/arm/macro-assembler-arm.cc b/src/arm/macro-assembler-arm.cc
index 65962e7fb7f50c3b6da96de139dcc9d26c13f523..47d42a3122073e988ee8985047244a19a51e8b67 100644
--- a/src/arm/macro-assembler-arm.cc
+++ b/src/arm/macro-assembler-arm.cc
@@ -516,12 +516,6 @@ void MacroAssembler::RecordWrite(Register object,
     Check(eq, kWrongAddressOrValuePassedToRecordWrite);
   }
 
-  // Count number of write barriers in generated code.
-  isolate()->counters()->write_barriers_static()->Increment();
-  // TODO(mstarzinger): Dynamic counter missing.
-
-  // First, check if a write barrier is even needed. The tests below
-  // catch stores of smis and stores into the young generation.
   Label done;
 
   if (smi_check == INLINE_SMI_CHECK) {