Stop overloading Init() in NativeMetafile.

printing/pdf_ps_metafile_cairo.h

 // Copyright (c) 2011 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_PDF_PS_METAFILE_CAIRO_H_
 #define PRINTING_PDF_PS_METAFILE_CAIRO_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/gtest_prod_util.h"
 #include "printing/native_metafile.h"
 
 typedef struct _cairo_surface cairo_surface_t;
 
 namespace printing {
 
 // This class uses Cairo graphics library to generate PDF stream and stores
 // rendering results in a string buffer.
 class PdfPsMetafile : public NativeMetafile {
  public:
   virtual ~PdfPsMetafile();
 
   // NativeMetafile methods.
   virtual bool Init();
-  virtual bool Init(const void* src_buffer, uint32 src_buffer_size);
+  virtual bool InitFromData(const void* src_buffer, uint32 src_buffer_size);
 
   virtual cairo_t* StartPage(const gfx::Size& page_size,
                              double margin_top_in_points,
                              double margin_left_in_points);
   virtual bool FinishPage();
   virtual bool Close();
 
   virtual uint32 GetDataSize() const;
   virtual bool GetData(void* dst_buffer, uint32 dst_buffer_size) const;
 
@@ skipping 32 matching lines @@
   std::string data_;
   // Buffer stores raw PDF contents set by SetRawPageData.
   std::string raw_override_data_;
 
   DISALLOW_COPY_AND_ASSIGN(PdfPsMetafile);
 };
 
 }  // namespace printing
 
 #endif  // PRINTING_PDF_PS_METAFILE_CAIRO_H_