Refactor webview to use //components/printing

components/printing/renderer/print_web_view_helper.cc

 // 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.
 
 #include "components/printing/renderer/print_web_view_helper.h"
 
 #include <string>
 
 #include "base/auto_reset.h"
 #include "base/json/json_writer.h"
@@ skipping 749 matching lines @@
     if (owns_web_view_) {
       DCHECK(!frame->isLoading());
       owns_web_view_ = false;
       web_view->close();
     }
   }
   frame_.Reset(NULL);
   on_ready_.Reset();
 }
 
+bool PrintWebViewHelper::Delegate::IsAskPrintSettingsEnabled() {
+  return true;
+}
+
+bool PrintWebViewHelper::Delegate::IsScriptedPrintEnabled() {
+  return true;
+}
+
 PrintWebViewHelper::PrintWebViewHelper(
     content::RenderView* render_view,
     scoped_ptr<Delegate> delegate)
     : content::RenderViewObserver(render_view),
       content::RenderViewObserverTracker<PrintWebViewHelper>(render_view),
       reset_prep_frame_view_(false),
       is_print_ready_metafile_sent_(false),
       ignore_css_margins_(false),
       is_scripted_printing_blocked_(false),
       notify_browser_of_print_failure_(true),
       print_for_preview_(false),
       delegate_(delegate.Pass()),
       print_node_in_progress_(false),
       is_loading_(false),
       is_scripted_preview_delayed_(false),
       weak_ptr_factory_(this) {
   if (!delegate_->IsPrintPreviewEnabled())
     DisablePreview();
 }
 
 PrintWebViewHelper::~PrintWebViewHelper() {}
 
 // static
 void PrintWebViewHelper::DisablePreview() {
   g_is_preview_enabled_ = false;
 }
 
 bool PrintWebViewHelper::IsScriptInitiatedPrintAllowed(
     blink::WebFrame* frame, bool user_initiated) {
+  if (!delegate_->IsScriptedPrintEnabled())

[dgn, 2015/01/23 15:21:09]

This is where window.print() was previously disabled (but with #ifdef). Now this
will allow to disabled print only for webview in the same way.

+    return false;
+
   // If preview is enabled, then the print dialog is tab modal, and the user
   // can always close the tab on a mis-behaving page (the system print dialog
   // is app modal). If the print was initiated through user action, don't
   // throttle. Or, if the command line flag to skip throttling has been set.
   return !is_scripted_printing_blocked_ &&
          (user_initiated || g_is_preview_enabled_ ||
           scripting_throttler_.IsAllowed(frame));
 }
 
 void PrintWebViewHelper::DidStartLoading() {
@@ skipping 451 matching lines @@
     return;  // Failed to init print page settings.
   }
 
   // Some full screen plugins can say they don't want to print.
   if (!expected_page_count) {
     DidFinishPrinting(FAIL_PRINT);
     return;
   }
 
   // Ask the browser to show UI to retrieve the final print settings.
-  if (!GetPrintSettingsFromUser(frame_ref.GetFrame(), node,
+  if (delegate_->IsAskPrintSettingsEnabled() &&
+      !GetPrintSettingsFromUser(frame_ref.GetFrame(), node,
                                 expected_page_count,
                                 is_scripted)) {
     DidFinishPrinting(OK);  // Release resources and fail silently.
     return;
   }
 
   // Render Pages for printing.
   if (!RenderPagesForPrint(frame_ref.GetFrame(), node)) {
     LOG(ERROR) << "RenderPagesForPrint failed";
     DidFinishPrinting(FAIL_PRINT);
@@ skipping 749 matching lines @@
       blink::WebConsoleMessage::LevelWarning, message));
   return false;
 }
 
 void PrintWebViewHelper::ScriptingThrottler::Reset() {
   // Reset counter on successful print.
   count_ = 0;
 }
 
 }  // namespace printing