Restored partial rasterization for AlphaBlend.

printing/emf_win.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PRINTING_EMF_WIN_H_
 #define PRINTING_EMF_WIN_H_
 
 #include <windows.h>
 
 #include <vector>
@@ skipping 80 matching lines @@
     return emf_;
   }
 
   // Returns true if metafile contains alpha blend.
   bool IsAlphaBlendUsed() const;
 
   // Returns new metafile with only bitmap created by playback of the current
   // metafile. Returns NULL if fails.
   Emf* RasterizeMetafile(int raster_area_in_pixels) const;
 
+  // Returns new metafile where AlphaBlend replaced by bitmaps. Returns NULL
+  // if fails.
+  Emf* RasterizeAlphaBlend() const;
+
  private:
   FRIEND_TEST_ALL_PREFIXES(EmfTest, DC);
   FRIEND_TEST_ALL_PREFIXES(EmfPrintingTest, PageBreak);
   FRIEND_TEST_ALL_PREFIXES(EmfTest, FileBackedEmf);
 
   // Retrieves the underlying data stream. It is a helper function.
   bool GetDataAsVector(std::vector<uint8>* buffer) const;
 
   // Playbacks safely one EMF record.
   static int CALLBACK SafePlaybackProc(HDC hdc,
@@ skipping 81 matching lines @@
   std::vector<Record> items_;
 
   EnumerationContext context_;
 
   DISALLOW_COPY_AND_ASSIGN(Enumerator);
 };
 
 }  // namespace printing
 
 #endif  // PRINTING_EMF_WIN_H_