Add ptr_util.h from base until std::make_unique<> available

core/fxge/dib/fx_dib_main.cpp

Index: core/fxge/dib/fx_dib_main.cpp
diff --git a/core/fxge/dib/fx_dib_main.cpp b/core/fxge/dib/fx_dib_main.cpp
index 14cd0f4da694ffffca1a9a35efe6d03942ad9104..df448a66bde6c7955e7417c5eb21a0f9da7fd303 100644
--- a/core/fxge/dib/fx_dib_main.cpp
+++ b/core/fxge/dib/fx_dib_main.cpp
@@ -13,6 +13,7 @@
 #include "core/fxge/cfx_gemodule.h"
 #include "core/fxge/dib/dib_int.h"
 #include "core/fxge/ge/cfx_cliprgn.h"
+#include "third_party/base/ptr_util.h"
 
 void CmykDecode(uint32_t cmyk, int& c, int& m, int& y, int& k) {
   c = FXSYS_GetCValue(cmyk);
@@ -1461,7 +1462,7 @@ CFX_DIBitmap* CFX_DIBSource::FlipImage(FX_BOOL bXFlip, FX_BOOL bYFlip) const {
 
 CFX_DIBExtractor::CFX_DIBExtractor(const CFX_DIBSource* pSrc) {
   if (pSrc->GetBuffer()) {
-    m_pBitmap = WrapUnique(new CFX_DIBitmap);
+    m_pBitmap = pdfium::MakeUnique<CFX_DIBitmap>();
     if (!m_pBitmap->Create(pSrc->GetWidth(), pSrc->GetHeight(),
                            pSrc->GetFormat(), pSrc->GetBuffer())) {
       m_pBitmap.reset();
@@ -1567,9 +1568,9 @@ FX_BOOL CFX_ImageRenderer::Start(CFX_DIBitmap* pDevice,
       m_Composer.Compose(pDevice, pClipRgn, bitmap_alpha, mask_color, m_ClipBox,
                          TRUE, m_Matrix.c > 0, m_Matrix.b < 0, m_bRgbByteOrder,
                          alpha_flag, pIccTransform, m_BlendType);
-      m_Stretcher = WrapUnique(new CFX_ImageStretcher(&m_Composer, pSource,
-                                                      dest_height, dest_width,
-                                                      bitmap_clip, dib_flags));
+      m_Stretcher = pdfium::MakeUnique<CFX_ImageStretcher>(
+          &m_Composer, pSource, dest_height, dest_width, bitmap_clip,
+          dib_flags);
       if (!m_Stretcher->Start())
         return FALSE;
 
@@ -1600,8 +1601,8 @@ FX_BOOL CFX_ImageRenderer::Start(CFX_DIBitmap* pDevice,
                      FALSE, FALSE, FALSE, m_bRgbByteOrder, alpha_flag,
                      pIccTransform, m_BlendType);
   m_Status = 1;
-  m_Stretcher = WrapUnique(new CFX_ImageStretcher(
-      &m_Composer, pSource, dest_width, dest_height, bitmap_clip, dib_flags));
+  m_Stretcher = pdfium::MakeUnique<CFX_ImageStretcher>(
+      &m_Composer, pSource, dest_width, dest_height, bitmap_clip, dib_flags);
   return m_Stretcher->Start();
 }
 
@@ -1680,7 +1681,7 @@ FX_BOOL CFX_BitmapStorer::SetInfo(int width,
                                   int height,
                                   FXDIB_Format src_format,
                                   uint32_t* pSrcPalette) {
-  m_pBitmap = WrapUnique(new CFX_DIBitmap);
+  m_pBitmap = pdfium::MakeUnique<CFX_DIBitmap>();
   if (!m_pBitmap->Create(width, height, src_format)) {
     m_pBitmap.reset();
     return FALSE;