Fix relative includes within core/

core/src/fxcrt/fx_system_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 <string>
 
+#include "../../../testing/fx_string_testhelpers.h"
+#include "core/include/fxcrt/fx_system.h"
 #include "testing/gtest/include/gtest/gtest.h"
-#include "../../../testing/fx_string_testhelpers.h"
-#include "../../include/fxcrt/fx_system.h"
 
 // Unit test covering cases where PDFium replaces well-known library
 // functionality on any given platformn.
 
 #if _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_
 
 namespace {
 
 const FX_CHAR kSentinel = 0x7f;
 
@@ skipping 132 matching lines @@
 
   Check64BitBase16Itoa(std::numeric_limits<int64_t>::max(), "7fffffffffffffff");
   Check64BitBase10Itoa(std::numeric_limits<int64_t>::max(),
                        "9223372036854775807");
   Check64BitBase2Itoa(
       std::numeric_limits<int64_t>::max(),
       "111111111111111111111111111111111111111111111111111111111111111");
 }
 
 #endif  // _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_