[interpreter] Introduce fused bytecodes for common sequences.

src/interpreter/bytecodes.cc

Index: src/interpreter/bytecodes.cc
diff --git a/src/interpreter/bytecodes.cc b/src/interpreter/bytecodes.cc
index 6604191c5953cccaf137a938721692f0a9da596d..6e39db774dd8c7223b5e1ad2c41c2bc46633ba67 100644
--- a/src/interpreter/bytecodes.cc
+++ b/src/interpreter/bytecodes.cc
@@ -100,14 +100,6 @@ const char* Bytecodes::OperandSizeToString(OperandSize operand_size) {
   return "";
 }
 
-
-// static
-uint8_t Bytecodes::ToByte(Bytecode bytecode) {
-  DCHECK(bytecode <= Bytecode::kLast);
-  return static_cast<uint8_t>(bytecode);
-}
-
-
 // static
 Bytecode Bytecodes::FromByte(uint8_t value) {
   Bytecode bytecode = static_cast<Bytecode>(value);