Print directly to CUPS using the IPP APIs

chrome/browser/printing/pdf_to_emf_converter.cc

 // Copyright 2014 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 "chrome/browser/printing/pdf_to_emf_converter.h"
 
 #include <stdint.h>
 
 #include <memory>
 #include <queue>
 #include <utility>
+#include <vector>
 
 #include "base/files/file.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "chrome/common/chrome_utility_messages.h"
 #include "chrome/common/chrome_utility_printing_messages.h"
 #include "chrome/grit/generated_resources.h"
@@ skipping 43 matching lines @@
 // files, and to efficiently interact with utility process.
 class LazyEmf : public MetafilePlayer {
  public:
   LazyEmf(const scoped_refptr<RefCountedTempDir>& temp_dir, ScopedTempFile file)
       : temp_dir_(temp_dir), file_(std::move(file)) {
     CHECK(file_);
   }
   ~LazyEmf() override { Close(); }
 
   bool SafePlayback(HDC hdc) const override;
+  bool GetDataAsVector(std::vector<char>* buffer) const override;
   bool SaveTo(base::File* file) const override;
 
  private:
   void Close() const;
   bool LoadEmf(Emf* emf) const;
 
   mutable scoped_refptr<RefCountedTempDir> temp_dir_;
   mutable ScopedTempFile file_;  // Mutable because of consts in base class.
 
   DISALLOW_COPY_AND_ASSIGN(LazyEmf);
@@ skipping 166 matching lines @@
   Emf emf;
   bool result = LoadEmf(&emf) && emf.SafePlayback(hdc);
   // TODO(vitalybuka): Fix destruction of metafiles. For some reasons
   // instances of Emf are not deleted. crbug.com/411683
   // It's known that the Emf going to be played just once to a printer. So just
   // release file here.
   Close();
   return result;
 }
 
+bool LazyEmf::GetDataAsVector(std::vector<char>* buffer) const {
+  NOTREACHED();
+  return false;
+}
+
 bool LazyEmf::SaveTo(base::File* file) const {
   Emf emf;
   return LoadEmf(&emf) && emf.SaveTo(file);
 }
 
 void LazyEmf::Close() const {
   file_.reset();
   temp_dir_ = NULL;
 }
 
@@ skipping 220 matching lines @@
 
 PdfToEmfConverter::~PdfToEmfConverter() {
 }
 
 // static
 std::unique_ptr<PdfToEmfConverter> PdfToEmfConverter::CreateDefault() {
   return std::unique_ptr<PdfToEmfConverter>(new PdfToEmfConverterImpl());
 }
 
 }  // namespace printing