Adds PrintingContext implementation stub for Android.

printing/pdf_metafile_skia.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_PDF_METAFILE_SKIA_H_
 #define PRINTING_PDF_METAFILE_SKIA_H_
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 45 matching lines @@
                         const RECT* rect) const OVERRIDE;
   virtual bool SafePlayback(gfx::NativeDrawingContext hdc) const OVERRIDE;
   virtual HENHMETAFILE emf() const OVERRIDE;
 #elif defined(OS_MACOSX)
   virtual bool RenderPage(unsigned int page_number,
                           gfx::NativeDrawingContext context,
                           const CGRect rect,
                           const MacRenderPageParams& params) const OVERRIDE;
 #endif
 
-#if defined(OS_CHROMEOS)
+#if defined(OS_CHROMEOS) || defined(OS_ANDROID)
   virtual bool SaveToFD(const base::FileDescriptor& fd) const OVERRIDE;
-#endif  // if defined(OS_CHROMEOS)
+#endif  // if defined(OS_CHROMEOS) || defined(OS_ANDROID)
 
   // Return a new metafile containing just the current page in draft mode.
   PdfMetafileSkia* GetMetafileForCurrentPage();
 
  private:
   scoped_ptr<PdfMetafileSkiaData> data_;
 
   // True when finish page is outstanding for current page.
   bool page_outstanding_;
 
   DISALLOW_COPY_AND_ASSIGN(PdfMetafileSkia);
 };
 
 }  // namespace printing
 
 #endif  // PRINTING_PDF_METAFILE_SKIA_H_