Move StructuredMachineAssembler into cctest suite.

test/cctest/compiler/test-js-context-specialization.cc

Index: test/cctest/compiler/test-js-context-specialization.cc
diff --git a/test/cctest/compiler/test-js-context-specialization.cc b/test/cctest/compiler/test-js-context-specialization.cc
index 740d9f3d497350c78e14bf83388b4a85df7d41a7..9816b1dc2d54b8bb7e142fd4ebb768026bef0d4a 100644
--- a/test/cctest/compiler/test-js-context-specialization.cc
+++ b/test/cctest/compiler/test-js-context-specialization.cc
@@ -6,7 +6,6 @@
 #include "src/compiler/js-operator.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties-inl.h"
-#include "src/compiler/simplified-node-factory.h"
 #include "src/compiler/source-position.h"
 #include "src/compiler/typer.h"
 #include "test/cctest/cctest.h"
@@ -16,10 +15,8 @@
 using namespace v8::internal;
 using namespace v8::internal::compiler;
 
-class ContextSpecializationTester
-    : public HandleAndZoneScope,
-      public DirectGraphBuilder,
-      public SimplifiedNodeFactory<ContextSpecializationTester> {
+class ContextSpecializationTester : public HandleAndZoneScope,
+                                    public DirectGraphBuilder {
  public:
   ContextSpecializationTester()
       : DirectGraphBuilder(new (main_zone()) Graph(main_zone())),
@@ -216,11 +213,12 @@ TEST(SpecializeToContext) {
                            const_context, const_context, effect_in);
 
 
-    Node* value_use = t.ChangeTaggedToInt32(load);
+    Node* value_use = t.NewNode(t.simplified()->ChangeTaggedToInt32(), load);
     Node* other_load = t.NewNode(t.javascript()->LoadContext(0, slot, true),
                                  param_context, param_context, load);
     Node* effect_use = other_load;
-    Node* other_use = t.ChangeTaggedToInt32(other_load);
+    Node* other_use =
+        t.NewNode(t.simplified()->ChangeTaggedToInt32(), other_load);
 
     Node* add = t.NewNode(t.javascript()->Add(), value_use, other_use,
                           param_context, other_load, start);