Add support to send print preset options in one message

chrome/browser/ui/webui/print_preview/print_preview_ui.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_PRINT_PREVIEW_UI_H_
 #define CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_PRINT_PREVIEW_UI_H_
 
 #include <string>
 
 #include "base/gtest_prod_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/time/time.h"
 #include "chrome/browser/ui/webui/constrained_web_dialog_ui.h"
 
 class PrintPreviewDataService;
 class PrintPreviewHandler;
 struct PrintHostMsg_DidGetPreviewPageCount_Params;
 struct PrintHostMsg_RequestPrintPreview_Params;
+struct PrintHostMsg_SetOptionsFromDocument_Params;
 
 namespace base {
 class FilePath;
 class RefCountedBytes;
 }
 
 namespace gfx {
 class Rect;
 }
 
@@ skipping 104 matching lines @@
 
   // Hides the print preview dialog.
   void OnHidePreviewDialog();
 
   // Closes the print preview dialog.
   void OnClosePrintPreviewDialog();
 
   // Reload the printers list.
   void OnReloadPrintersList();
 
-  // Notifies the WebUI that the pdf print scaling option is disabled by
-  // default.
-  void OnPrintPreviewScalingDisabled();
+  // Notifies the WebUI to set print preset options from source PDF.
+  void OnSetOptionsFromDocument(
+      const PrintHostMsg_SetOptionsFromDocument_Params& params);
 
   // Allows tests to wait until the print preview dialog is loaded. Optionally
   // also instructs the dialog to auto-cancel, which is used for testing only.
   class TestingDelegate {
    public:
     virtual bool IsAutoCancelEnabled() = 0;
     virtual void DidGetPreviewPageCount(int page_count) = 0;
     virtual void DidRenderPreviewPage(content::WebContents* preview_dialog) = 0;
   };
 
@@ skipping 41 matching lines @@
   // title.
   base::string16 initiator_title_;
 
   // Keeps track of whether OnClosePrintPreviewDialog() has been called or not.
   bool dialog_closed_;
 
   DISALLOW_COPY_AND_ASSIGN(PrintPreviewUI);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_PRINT_PREVIEW_UI_H_