Convert loose FX_Create* functions into static methods

core/fpdfapi/parser/cpdf_parser_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 <limits>
 #include <string>
 
 #include "core/fpdfapi/parser/cpdf_parser.h"
 #include "core/fpdfapi/parser/cpdf_syntax_parser.h"
 #include "core/fxcrt/fx_ext.h"
@@ skipping 27 matching lines @@
 };
 
 // A wrapper class to help test member functions of CPDF_Parser.
 class CPDF_TestParser : public CPDF_Parser {
  public:
   CPDF_TestParser() {}
   ~CPDF_TestParser() {}
 
   // Setup reading from a file and initial states.
   bool InitTestFromFile(const FX_CHAR* path) {
-    IFX_SeekableReadStream* pFileAccess = FX_CreateFileRead(path);
+    IFX_SeekableReadStream* pFileAccess =
+        IFX_SeekableReadStream::CreateFromFilename(path);
     if (!pFileAccess)
       return false;
 
     // For the test file, the header is set at the beginning.
     m_pSyntax->InitParser(pFileAccess, 0);
     return true;
   }
 
   // Setup reading from a buffer and initial states.
   bool InitTestFromBuffer(const unsigned char* buffer, size_t len) {
@@ skipping 134 matching lines @@
 
     ASSERT_TRUE(parser.LoadCrossRefV4(0, 0, false));
     const FX_FILESIZE offsets[] = {0, 23, 0, 0, 0, 45, 179};
     const uint8_t types[] = {0, 1, 0, 0, 0, 1, 1};
     for (size_t i = 0; i < FX_ArraySize(offsets); ++i) {
       EXPECT_EQ(offsets[i], parser.m_ObjectInfo[i].pos);
       EXPECT_EQ(types[i], parser.m_ObjectInfo[i].type);
     }
   }
 }