[Print Preview] Refactored code to support auto fit to page functionality.

chrome/renderer/print_web_view_helper.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_RENDERER_PRINT_WEB_VIEW_HELPER_H_
 #define CHROME_RENDERER_PRINT_WEB_VIEW_HELPER_H_
 #pragma once
 
 #include <vector>
 
@@ skipping 182 matching lines @@
 
   void Print(WebKit::WebFrame* frame, const WebKit::WebNode& node);
 
   // Notification when printing is done - signal tear-down/free resources.
   void DidFinishPrinting(PrintingResult result);
 
   // Print Settings -----------------------------------------------------------
 
   // Initialize print page settings with default settings.
   // Used only for native printing workflow.
-  bool InitPrintSettings();
+  bool InitPrintSettings(WebKit::WebFrame* frame, const WebKit::WebNode& node);
 
   // Initialize print page settings with default settings and prepare the frame
   // for print. A new PrepareFrameAndViewForPrint is created to fulfill the
   // request and is filled into the |prepare| argument.
   // Used only for native printing workflow.
   bool InitPrintSettingsAndPrepareFrame(
       WebKit::WebFrame* frame,
       const WebKit::WebNode& node,
       scoped_ptr<PrepareFrameAndViewForPrint>* prepare);
 
@@ skipping 65 matching lines @@
 
   bool CopyMetafileDataToSharedMem(printing::Metafile* metafile,
                                    base::SharedMemoryHandle* shared_mem_handle);
 
   // Helper method to get page layout in points and fit to page if needed.
   static void ComputePageLayoutInPointsForCss(
       WebKit::WebFrame* frame,
       int page_index,
       const PrintMsg_Print_Params& default_params,
       bool ignore_css_margins,
-      bool fit_to_page,
       double* scale_factor,
       printing::PageSizeMargins* page_layout_in_points);
 
   // Prepare the frame and view for print and then call this function to honor
   // the CSS page layout information.
   static void UpdateFrameAndViewFromCssPageLayout(
       WebKit::WebFrame* frame,
       const WebKit::WebNode& node,
       PrepareFrameAndViewForPrint* prepare,
       const PrintMsg_Print_Params& params,
-      bool ignore_css_margins,
-      bool fit_to_page);
+      bool ignore_css_margins);
 
   // Given the |device| and |canvas| to draw on, prints the appropriate headers
   // and footers using strings from |header_footer_info| on to the canvas.
   static void PrintHeaderAndFooter(
       WebKit::WebCanvas* canvas,
       int page_number,
       int total_pages,
       float webkit_scale_factor,
       const printing::PageSizeMargins& page_layout_in_points,
       const base::DictionaryValue& header_footer_info);
@@ skipping 36 matching lines @@
   bool PreviewPageRendered(int page_number, printing::Metafile* metafile);
 
   // WebView used only to print the selection.
   WebKit::WebView* print_web_view_;
 
   scoped_ptr<PrintMsg_PrintPages_Params> print_pages_params_;
   bool is_preview_enabled_;
   bool is_print_ready_metafile_sent_;
   bool ignore_css_margins_;
 
-  // True if we need to auto fit to page else false.
-  // NOTE: When we print to pdf, we don't fit to page.
-  bool fit_to_page_;
-
   // Used for scripted initiated printing blocking.
   base::Time last_cancelled_script_print_;
   int user_cancelled_scripted_print_count_;
   bool is_scripted_printing_blocked_;
 
   // Let the browser process know of a printing failure. Only set to false when
   // the failure came from the browser in the first place.
   bool notify_browser_of_print_failure_;
 
   // True, when printing from print preview.
@@ skipping 15 matching lines @@
     // the |web_frame| / |web_node| to generate the print preview for.
     void InitWithFrame(WebKit::WebFrame* web_frame);
     void InitWithNode(const WebKit::WebNode& web_node);
 
     // Does bookkeeping at the beginning of print preview.
     void OnPrintPreview();
 
     // Create the print preview document. |pages| is empty to print all pages.
     bool CreatePreviewDocument(PrintMsg_Print_Params* params,
                                const std::vector<int>& pages,
-                               bool ignore_css_margins,
-                               bool fit_to_page);
+                               bool ignore_css_margins);
 
     // Called after a page gets rendered. |page_time| is how long the
     // rendering took.
     void RenderedPreviewPage(const base::TimeDelta& page_time);
 
     // Updates the print preview context when the required pages are rendered.
     void AllPagesRendered();
 
     // Finalizes the print ready preview document.
     void FinalizePrintReadyDocument();
@@ skipping 65 matching lines @@
     enum PrintPreviewErrorBuckets error_;
 
     State state_;
   };
 
   PrintPreviewContext print_preview_context_;
   DISALLOW_COPY_AND_ASSIGN(PrintWebViewHelper);
 };
 
 #endif  // CHROME_RENDERER_PRINT_WEB_VIEW_HELPER_H_