Fix vector resize logic when encoding non-BMP chars to x-user-defined

third_party/WebKit/Source/wtf/text/TextCodecUserDefinedTest.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 "wtf/text/TextCodecLatin1.h"
+#include "wtf/text/TextCodecUserDefined.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 #include "wtf/text/CString.h"
 #include "wtf/text/TextCodec.h"
 #include "wtf/text/TextEncoding.h"
 #include "wtf/text/TextEncodingRegistry.h"
 #include <memory>
 
-TEST(TextCodecLatin1Test, QuestionMarksAndSurrogates) {
-  WTF::TextEncoding encoding("windows-1252");
+TEST(TextCodecUserDefinedTest, QuestionMarksAndSurrogates) {
+  WTF::TextEncoding encoding("x-user-defined");
   std::unique_ptr<WTF::TextCodec> codec(newTextCodec(encoding));
 
   {
     const LChar testCase[] = {0xd1, 0x16, 0x86};
     size_t testCaseSize = WTF_ARRAY_LENGTH(testCase);
     CString result = codec->encode(testCase, testCaseSize,
                                    WTF::QuestionMarksForUnencodables);
-    EXPECT_STREQ("\xd1\x16?", result.data());
+    EXPECT_STREQ("?\x16?", result.data());
   }
   {
     const UChar testCase[] = {0xd9f0, 0xdcd9};
     size_t testCaseSize = WTF_ARRAY_LENGTH(testCase);
     CString result = codec->encode(testCase, testCaseSize,
                                    WTF::QuestionMarksForUnencodables);
     EXPECT_STREQ("?", result.data());
   }
   {
     const UChar testCase[] = {0xd9f0, 0xdcd9, 0xd9f0, 0xdcd9};
     size_t testCaseSize = WTF_ARRAY_LENGTH(testCase);
     CString result = codec->encode(testCase, testCaseSize,
                                    WTF::QuestionMarksForUnencodables);
     EXPECT_STREQ("??", result.data());
   }
+  {
+    const UChar testCase[] = {0x0041, 0xd9f0, 0xdcd9, 0xf7c1, 0xd9f0, 0xdcd9};
+    size_t testCaseSize = WTF_ARRAY_LENGTH(testCase);
+    CString result = codec->encode(testCase, testCaseSize,
+                                   WTF::QuestionMarksForUnencodables);
+    EXPECT_STREQ("A?\xC1?", result.data());
+  }
 }