Adds PrintingContext implementation stub for Android.

printing/pdf_metafile_skia.cc

 // 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.
 
 #include "printing/pdf_metafile_skia.h"
 
 #include "base/containers/hash_tables.h"
 #include "base/file_descriptor_posix.h"
 #include "base/file_util.h"
 #include "base/metrics/histogram.h"
@@ skipping 174 matching lines @@
                                  const MacRenderPageParams& params) const {
   DCHECK_GT(data_->pdf_stream_.getOffset(), 0U);
   if (data_->pdf_cg_.GetDataSize() == 0) {
     SkAutoDataUnref data(data_->pdf_stream_.copyToData());
     data_->pdf_cg_.InitFromData(data->bytes(), data->size());
   }
   return data_->pdf_cg_.RenderPage(page_number, context, rect, params);
 }
 #endif
 
-#if defined(OS_CHROMEOS)
+#if defined(OS_CHROMEOS) || defined(OS_ANDROID)
 bool PdfMetafileSkia::SaveToFD(const base::FileDescriptor& fd) const {
   DCHECK_GT(data_->pdf_stream_.getOffset(), 0U);
 
   if (fd.fd < 0) {
     DLOG(ERROR) << "Invalid file descriptor!";
     return false;
   }
 
   bool result = true;
   SkAutoDataUnref data(data_->pdf_stream_.copyToData());
@@ skipping 33 matching lines @@
   if (data->size() == 0)
     return NULL;
 
   PdfMetafileSkia* metafile = new PdfMetafileSkia;
   metafile->InitFromData(data->bytes(),
                          base::checked_numeric_cast<uint32>(data->size()));
   return metafile;
 }
 
 }  // namespace printing