Reign in print throttling.

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_
 
 #include <vector>
 
 #include "base/gtest_prod_util.h"
@@ skipping 120 matching lines @@
   };
 
   enum PrintPreviewRequestType {
     PRINT_PREVIEW_USER_INITIATED_ENTIRE_FRAME,
     PRINT_PREVIEW_USER_INITIATED_CONTEXT_NODE,
     PRINT_PREVIEW_SCRIPTED  // triggered by window.print().
   };
 
   // RenderViewObserver implementation.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
-  virtual void PrintPage(WebKit::WebFrame* frame) OVERRIDE;
+  virtual void PrintPage(WebKit::WebFrame* frame, bool user_initiated) OVERRIDE;
 
   // Message handlers ---------------------------------------------------------
 
   // Print the document.
   void OnPrintPages();
 
   // Print the document with the print preview frame/node.
   void OnPrintForSystemDialog();
 
   // Get |page_size| and |content_area| information from
@@ skipping 172 matching lines @@
       const printing::PageSizeMargins& page_layout_in_points,
       const base::DictionaryValue& header_footer_info);
 
   bool GetPrintFrame(WebKit::WebFrame** frame);
 
   // This reports the current time - |start_time| as the time to render a page.
   void ReportPreviewPageRenderTime(base::TimeTicks start_time);
 
   // Script Initiated Printing ------------------------------------------------
 
-  // Return true if script initiated printing is currently allowed.
-  bool IsScriptInitiatedPrintAllowed(WebKit::WebFrame* frame);
+  // Return true if script initiated printing is currently
+  // allowed. |user_initiated| should be true when a user event triggered the
+  // script, most likely by pressing a print button on the page.
+  bool IsScriptInitiatedPrintAllowed(WebKit::WebFrame* frame,
+                                     bool user_initiated);
 
   // Returns true if script initiated printing occurs too often.
   bool IsScriptInitiatedPrintTooFrequent(WebKit::WebFrame* frame);
 
   // Reset the counter for script initiated printing.
   // Scripted printing will be allowed to continue.
   void ResetScriptedPrintCount();
 
   // Increment the counter for script initiated printing.
   // Scripted printing will be blocked for a limited amount of time.
@@ skipping 10 matching lines @@
   // For a valid |page_number| with modifiable content,
   // |metafile| is the rendered page. Otherwise |metafile| is NULL.
   // Returns true if print preview should continue, false on failure.
   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_scripted_print_throttling_disabled_;
   bool is_print_ready_metafile_sent_;
   bool ignore_css_margins_;
 
   // 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.
@@ skipping 104 matching lines @@
     enum PrintPreviewErrorBuckets error_;
 
     State state_;
   };
 
   PrintPreviewContext print_preview_context_;
   DISALLOW_COPY_AND_ASSIGN(PrintWebViewHelper);
 };
 
 #endif  // CHROME_RENDERER_PRINT_WEB_VIEW_HELPER_H_