Revert r18029.

src/mips/macro-assembler-mips.cc

Index: src/mips/macro-assembler-mips.cc
diff --git a/src/mips/macro-assembler-mips.cc b/src/mips/macro-assembler-mips.cc
index 04aa9c97153352fe1e6b2ed90bef636cd57b414c..cdfbae39c2a27242f7745cc9cd5d039d11060428 100644
--- a/src/mips/macro-assembler-mips.cc
+++ b/src/mips/macro-assembler-mips.cc
@@ -275,12 +275,6 @@ void MacroAssembler::RecordWrite(Register object,
         eq, kWrongAddressOrValuePassedToRecordWrite, at, Operand(value));
   }
 
-  // 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) {