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diff --git a/printing/printing_context.h b/printing/printing_context.h
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+++ b/printing/printing_context.h
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+// Copyright (c) 2006-2008 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_PRINTING_CONTEXT_H_
+#define PRINTING_PRINTING_CONTEXT_H_
+
+#include "build/build_config.h"
+
+#if defined(OS_WIN)
+#include <ocidl.h>
+#include <commdlg.h>
+#endif
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "printing/print_settings.h"
+
+namespace printing {
+
+// Describe the user selected printing context for Windows. This includes the
+// OS-dependent UI to ask the user about the print settings. This class directly
+// talk to the printer and manages the document and pages breaks.
+class PrintingContext {
+ public:
+  // Tri-state result for user behavior-dependent functions.
+  enum Result {
+    OK,
+    CANCEL,
+    FAILED,
+  };
+
+  PrintingContext();
+  ~PrintingContext();
+
+#if defined(OS_WIN)
+  // Asks the user what printer and format should be used to print. Updates the
+  // context with the select device settings.
+  Result AskUserForSettings(HWND window, int max_pages, bool has_selection);
+#endif
+
+  // Selects the user's default printer and format. Updates the context with the
+  // default device settings.
+  Result UseDefaultSettings();
+
+  // Initializes with predefined settings.
+  Result InitWithSettings(const PrintSettings& settings);
+
+  // Reinitializes the settings to uninitialized for object reuse.
+  void ResetSettings();
+
+  // Does platform specific setup of the printer before the printing. Signal the
+  // printer that a document is about to be spooled.
+  // Warning: This function enters a message loop. That may cause side effects
+  // like IPC message processing! Some printers have side-effects on this call
+  // like virtual printers that ask the user for the path of the saved document;
+  // for example a PDF printer.
+  Result NewDocument(const std::wstring& document_name);
+
+  // Starts a new page.
+  Result NewPage();
+
+  // Closes the printed page.
+  Result PageDone();
+
+  // Closes the printing job. After this call the object is ready to start a new
+  // document.
+  Result DocumentDone();
+
+  // Cancels printing. Can be used in a multi-threaded context. Takes effect
+  // immediately.
+  void Cancel();
+
+  // Dismiss the Print... dialog box if shown.
+  void DismissDialog();
+
+#if defined(OS_WIN)
+  HDC context() {
+    return hdc_;
+  }
+#endif
+
+  const PrintSettings& settings() const {
+    return settings_;
+  }
+
+ private:
+  // Class that manages the PrintDlgEx() callbacks. This is meant to be a
+  // temporary object used during the Print... dialog display.
+  class CallbackHandler;
+
+  // Does bookkeeping when an error occurs.
+  PrintingContext::Result OnError();
+
+#if defined(OS_WIN)
+  // Used in response to the user canceling the printing.
+  static BOOL CALLBACK AbortProc(HDC hdc, int nCode);
+
+  // Reads the settings from the selected device context. Updates settings_ and
+  // its margins.
+  bool InitializeSettings(const DEVMODE& dev_mode,
+                          const std::wstring& new_device_name,
+                          const PRINTPAGERANGE* ranges,
+                          int number_ranges,
+                          bool selection_only);
+
+  // Retrieves the printer's default low-level settings. hdc_ is allocated with
+  // this call.
+  bool GetPrinterSettings(HANDLE printer,
+                          const std::wstring& device_name);
+
+  // Allocates the HDC for a specific DEVMODE.
+  bool AllocateContext(const std::wstring& printer_name,
+                       const DEVMODE* dev_mode);
+
+  // Parses the result of a PRINTDLGEX result.
+  Result ParseDialogResultEx(const PRINTDLGEX& dialog_options);
+  Result ParseDialogResult(const PRINTDLG& dialog_options);
+
+  // The selected printer context.
+  HDC hdc_;
+#endif
+
+  // Complete print context settings.
+  PrintSettings settings_;
+
+#ifndef NDEBUG
+  // Current page number in the print job.
+  int page_number_;
+#endif
+
+#if defined(OS_WIN)
+  // The dialog box for the time it is shown.
+  volatile HWND dialog_box_;
+#endif
+
+  // The dialog box has been dismissed.
+  volatile bool dialog_box_dismissed_;
+
+  // Is a print job being done.
+  volatile bool in_print_job_;
+
+  // Did the user cancel the print job.
+  volatile bool abort_printing_;
+
+  DISALLOW_EVIL_CONSTRUCTORS(PrintingContext);
+};
+
+}  // namespace printing
+
+#endif  // PRINTING_PRINTING_CONTEXT_H_