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

third_party/WebKit/Source/core/html/HTMLTextAreaElementTest.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/html/HTMLTextAreaElement.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
+#include "wtf/text/StringBuilder.h"
 
 namespace blink {
 
 TEST(HTMLTextAreaElementTest, SanitizeUserInputValue) {
   UChar kLeadSurrogate = 0xD800;
   EXPECT_EQ("", HTMLTextAreaElement::sanitizeUserInputValue("", 0));
   EXPECT_EQ("", HTMLTextAreaElement::sanitizeUserInputValue("a", 0));
   EXPECT_EQ("", HTMLTextAreaElement::sanitizeUserInputValue("\n", 0));
   StringBuilder builder;
   builder.append(kLeadSurrogate);
   String leadSurrogate = builder.toString();
   EXPECT_EQ("", HTMLTextAreaElement::sanitizeUserInputValue(leadSurrogate, 0));
 
   EXPECT_EQ("", HTMLTextAreaElement::sanitizeUserInputValue("", 1));
   EXPECT_EQ("", HTMLTextAreaElement::sanitizeUserInputValue(leadSurrogate, 1));
   EXPECT_EQ("a", HTMLTextAreaElement::sanitizeUserInputValue("a", 1));
   EXPECT_EQ("\n", HTMLTextAreaElement::sanitizeUserInputValue("\n", 1));
   EXPECT_EQ("\n", HTMLTextAreaElement::sanitizeUserInputValue("\n", 2));
 
   EXPECT_EQ("abc", HTMLTextAreaElement::sanitizeUserInputValue(
                        String("abc") + leadSurrogate, 4));
   EXPECT_EQ("a\ncd", HTMLTextAreaElement::sanitizeUserInputValue("a\ncdef", 4));
   EXPECT_EQ("a\rcd", HTMLTextAreaElement::sanitizeUserInputValue("a\rcdef", 4));
   EXPECT_EQ("a\r\ncd",
             HTMLTextAreaElement::sanitizeUserInputValue("a\r\ncdef", 4));
 }
 
 }  // namespace blink