Refactor common unit test code.

src/compiler/graph-unittest.h

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_COMPILER_GRAPH_UNITTEST_H_
 #define V8_COMPILER_GRAPH_UNITTEST_H_
 
 #include "src/compiler/common-operator.h"
-#include "src/compiler/compiler-unittests.h"
 #include "src/compiler/graph.h"
 #include "src/compiler/machine-operator.h"
+#include "src/test/test-utils.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace v8 {
 namespace internal {
 
 // Forward declarations.
 class HeapObject;
 template <class T>
 class PrintableUnique;
 
 namespace compiler {
 
 using ::testing::Matcher;
 
 
-class GraphTest : public CompilerTest {
+class GraphTest : public TestWithContext, public TestWithZone {
  public:
   explicit GraphTest(int parameters = 1);
   virtual ~GraphTest();
 
  protected:
   Node* Parameter(int32_t index);
   Node* Float64Constant(double value);
   Node* Int32Constant(int32_t value);
   Node* Int64Constant(int64_t value);
   Node* NumberConstant(double value);
@@ skipping 84 matching lines @@
 Matcher<Node*> IsChangeUint32ToFloat64(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsChangeUint32ToUint64(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsTruncateFloat64ToInt32(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsTruncateInt64ToInt32(const Matcher<Node*>& input_matcher);
 
 }  //  namespace compiler
 }  //  namespace internal
 }  //  namespace v8
 
 #endif  // V8_COMPILER_GRAPH_UNITTEST_H_