[turbofan] Introduce JSToInteger and JSToLength operators.

src/compiler/js-intrinsic-lowering.h

Index: src/compiler/js-intrinsic-lowering.h
diff --git a/src/compiler/js-intrinsic-lowering.h b/src/compiler/js-intrinsic-lowering.h
index 4343236c070f4595ed2409e640682127585afd06..2de6016b7b22a07b65a4376677bc022a32d38650 100644
--- a/src/compiler/js-intrinsic-lowering.h
+++ b/src/compiler/js-intrinsic-lowering.h
@@ -13,7 +13,6 @@ namespace internal {
 
 // Forward declarations.
 class Callable;
-class TypeCache;
 
 
 namespace compiler {
@@ -83,11 +82,9 @@ class JSIntrinsicLowering final : public AdvancedReducer {
   MachineOperatorBuilder* machine() const;
   SimplifiedOperatorBuilder* simplified() const;
   DeoptimizationMode mode() const { return mode_; }
-  TypeCache const& type_cache() const { return type_cache_; }
 
   JSGraph* const jsgraph_;
   DeoptimizationMode const mode_;
-  TypeCache const& type_cache_;
 };
 
 }  // namespace compiler