Implement the basic OS-level printing mechanics on Mac

printing/printed_document_linux.cc

Index: printing/printed_document_linux.cc
diff --git a/printing/printed_document_linux.cc b/printing/printed_document_linux.cc
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+// Copyright (c) 2009 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/printed_document.h"
+
+#include "base/file_util.h"
+#include "base/logging.h"
+#include "base/message_loop.h"
+#include "printing/page_number.h"
+#include "printing/printed_page.h"
+
+namespace printing {
+
+void PrintedDocument::RenderPrintedPage(
+    const PrintedPage& page, gfx::NativeDrawingContext context) const {
+#ifndef NDEBUG
+  {
+    // Make sure the page is from our list.
+    AutoLock lock(lock_);
+    DCHECK(&page == mutable_.pages_.find(page.page_number() - 1)->second.get());
+  }
+#endif
+
+  NOTIMPLEMENTED();
+}
+
+}  // namespace printing