[types] Use the TypeCache consistently for common types.

test/unittests/compiler/js-typed-lowering-unittest.cc

Index: test/unittests/compiler/js-typed-lowering-unittest.cc
diff --git a/test/unittests/compiler/js-typed-lowering-unittest.cc b/test/unittests/compiler/js-typed-lowering-unittest.cc
index 2015c7edf033181fedf3ef537915eeea32f06f6a..ecf47a19e2e6448b8299db5866e477cdb7c21a54 100644
--- a/test/unittests/compiler/js-typed-lowering-unittest.cc
+++ b/test/unittests/compiler/js-typed-lowering-unittest.cc
@@ -191,11 +191,10 @@ TEST_F(JSTypedLoweringTest, JSUnaryNotWithString) {
   Reduction r = Reduce(graph()->NewNode(javascript()->UnaryNot(), input,
                                         context, graph()->start()));
   ASSERT_TRUE(r.Changed());
-  EXPECT_THAT(
-      r.replacement(),
-      IsNumberEqual(IsLoadField(AccessBuilder::ForStringLength(zone()), input,
-                                graph()->start(), graph()->start()),
-                    IsNumberConstant(0.0)));
+  EXPECT_THAT(r.replacement(),
+              IsNumberEqual(IsLoadField(AccessBuilder::ForStringLength(), input,
+                                        graph()->start(), graph()->start()),
+                            IsNumberConstant(0.0)));
 }
 
 
@@ -390,8 +389,8 @@ TEST_F(JSTypedLoweringTest, JSToBooleanWithString) {
   EXPECT_THAT(
       r.replacement(),
       IsNumberLessThan(IsNumberConstant(0.0),
-                       IsLoadField(AccessBuilder::ForStringLength(zone()),
-                                   input, graph()->start(), graph()->start())));
+                       IsLoadField(AccessBuilder::ForStringLength(), input,
+                                   graph()->start(), graph()->start())));
 }
 
 
@@ -881,9 +880,8 @@ TEST_F(JSTypedLoweringTest, JSLoadNamedStringLength) {
                          receiver, vector, context, EmptyFrameState(),
                          EmptyFrameState(), effect, control));
     ASSERT_TRUE(r.Changed());
-    EXPECT_THAT(r.replacement(),
-                IsLoadField(AccessBuilder::ForStringLength(zone()), receiver,
-                            effect, control));
+    EXPECT_THAT(r.replacement(), IsLoadField(AccessBuilder::ForStringLength(),
+                                             receiver, effect, control));
   }
 }