Avoid to include IDL-generated headers from EventTarget.h and Node.h

third_party/WebKit/Source/core/paint/FirstMeaningfulPaintDetectorTest.cpp

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/paint/FirstMeaningfulPaintDetector.h"
 
 #include "core/paint/PaintTiming.h"
 #include "core/testing/DummyPageHolder.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "wtf/text/StringBuilder.h"
 
 namespace blink {
 
 class FirstMeaningfulPaintDetectorTest : public testing::Test {
  protected:
   void SetUp() override {
     m_dummyPageHolder = DummyPageHolder::create(IntSize(800, 600));
     s_timeElapsed = 0.0;
     m_originalTimeFunction = setTimeFunctionsForTesting(returnMockTime);
   }
@@ skipping 100 matching lines @@
        FirstMeaningfulPaintShouldNotBeBeforeFirstContentfulPaint) {
   paintTiming().markFirstPaint();
   simulateLayoutAndPaint(10);
   paintTiming().markFirstContentfulPaint();
   simulateNetworkStable();
   EXPECT_GE(paintTiming().firstMeaningfulPaint(),
             paintTiming().firstContentfulPaint());
 }
 
 }  // namespace blink