Remove FX_DWORD from core/ and delete definition

core/fpdfapi/fpdf_parser/fpdf_parser_decode_unittest.cpp

 // Copyright 2015 PDFium 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/fpdfapi/fpdf_parser/include/fpdf_parser_decode.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/test_support.h"
 
 TEST(fpdf_parser_decode, A85Decode) {
@@ skipping 11 matching lines @@
       // No ending mark.
       STR_IN_OUT_CASE("@3B0)DJj_BF*)>@Gp#-s", "a funny story :)", 20),
       // Non-multiple length.
       STR_IN_OUT_CASE("12A", "2k", 3),
       // Stop at unknown characters.
       STR_IN_OUT_CASE("FCfN8FCfN8vw", "testtest", 11),
   };
   for (size_t i = 0; i < FX_ArraySize(test_data); ++i) {
     pdfium::DecodeTestData* ptr = &test_data[i];
     uint8_t* result = nullptr;
-    FX_DWORD result_size;
+    uint32_t result_size;
     EXPECT_EQ(ptr->processed_size,
               A85Decode(ptr->input, ptr->input_size, result, result_size))
         << "for case " << i;
     ASSERT_EQ(ptr->expected_size, result_size);
     for (size_t j = 0; j < result_size; ++j) {
       EXPECT_EQ(ptr->expected[j], result[j]) << "for case " << i << " char "
                                              << j;
     }
     FX_Free(result);
   }
@@ skipping 14 matching lines @@
       // Non-multiple length.
       STR_IN_OUT_CASE("12A>zzz", "\x12\xa0", 4),
       // Skips unknown characters.
       STR_IN_OUT_CASE("12tk  \tAc>zzz", "\x12\xac", 10),
       // No ending mark.
       STR_IN_OUT_CASE("12AcED3c3456", "\x12\xac\xed\x3c\x34\x56", 12),
   };
   for (size_t i = 0; i < FX_ArraySize(test_data); ++i) {
     pdfium::DecodeTestData* ptr = &test_data[i];
     uint8_t* result = nullptr;
-    FX_DWORD result_size;
+    uint32_t result_size;
     EXPECT_EQ(ptr->processed_size,
               HexDecode(ptr->input, ptr->input_size, result, result_size))
         << "for case " << i;
     ASSERT_EQ(ptr->expected_size, result_size);
     for (size_t j = 0; j < result_size; ++j) {
       EXPECT_EQ(ptr->expected[j], result[j]) << "for case " << i << " char "
                                              << j;
     }
     FX_Free(result);
   }
 }