Eliminate PS printing edge cases

printing/printing_context_win.h

 // Copyright (c) 2011 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_WIN_H_
 #define PRINTING_PRINTING_CONTEXT_WIN_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 23 matching lines @@
   gfx::Size GetPdfPaperSizeDeviceUnits() override;
   Result UpdatePrinterSettings(bool external_preview,
                                bool show_system_dialog,
                                int page_count) override;
   Result NewDocument(const base::string16& document_name) override;
   Result NewPage() override;
   Result PageDone() override;
   Result DocumentDone() override;
   void Cancel() override;
   void ReleaseContext() override;
+  void SetPostScriptEnabled(bool is_enabled) override;
   skia::NativeDrawingContext context() const override;
 
  protected:
   static HWND GetRootWindow(gfx::NativeView view);
 
   // Reads the settings from the selected device context. Updates settings_ and
   // its margins.
   virtual Result InitializeSettings(const base::string16& device_name,
                                     DEVMODE* dev_mode);
 
   void set_context(HDC context) { context_ = context; }
 
+  bool postscript_enabled() { return is_postscript_enabled_; }

[Lei Zhang, 2017/02/25 03:03:35]

const method

+
  private:
   // Used in response to the user canceling the printing.
   static BOOL CALLBACK AbortProc(HDC hdc, int nCode);
 
   // The selected printer context.
   HDC context_;
 
+  // Is postscript printing enabled

[Lei Zhang, 2017/02/25 03:03:35]

"Is the postscript printing feature enabled"

+  bool is_postscript_enabled_ = false;
+
   DISALLOW_COPY_AND_ASSIGN(PrintingContextWin);
 };
 
 }  // namespace printing
 
 #endif  // PRINTING_PRINTING_CONTEXT_WIN_H_