Move fx_extension implementation to cpp file

This CL moves the GetBits32 implemenation into fx_extension.cpp. It
also moves some of the fx_basic unittests to the correct unittest files.

Change-Id: I2cf8657c228375508db0f02baa628d62a3b2ab25
Reviewed-on: https://pdfium-review.googlesource.com/12673
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

1 files changed, 0 insertions, 40 deletions

diff --git a/core/fxcrt/fx_basic_util.cpp b/core/fxcrt/fx_basic_util.cpp
deleted file mode 100644
index 704fd18418..0000000000
--- a/core/fxcrt/fx_basic_util.cpp
+++ /dev/null
@@ -1,40 +0,0 @@
-// Copyright 2014 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.
-
-// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
-
-#include <algorithm>
-
-#include "core/fxcrt/fx_system.h"
-
-uint32_t GetBits32(const uint8_t* pData, int bitpos, int nbits) {
-  ASSERT(0 < nbits && nbits <= 32);
-  const uint8_t* dataPtr = &pData[bitpos / 8];
-  int bitShift;
-  int bitMask;
-  int dstShift;
-  int bitCount = bitpos & 0x07;
-  if (nbits < 8 && nbits + bitCount <= 8) {
-    bitShift = 8 - nbits - bitCount;
-    bitMask = (1 << nbits) - 1;
-    dstShift = 0;
-  } else {
-    bitShift = 0;
-    int bitOffset = 8 - bitCount;
-    bitMask = (1 << std::min(bitOffset, nbits)) - 1;
-    dstShift = nbits - bitOffset;
-  }
-  uint32_t result =
-      static_cast<uint32_t>((*dataPtr++ >> bitShift & bitMask) << dstShift);
-  while (dstShift >= 8) {
-    dstShift -= 8;
-    result |= *dataPtr++ << dstShift;
-  }
-  if (dstShift > 0) {
-    bitShift = 8 - dstShift;
-    bitMask = (1 << dstShift) - 1;
-    result |= *dataPtr++ >> bitShift & bitMask;
-  }
-  return result;
-}