Change printing of PDFs for preview on Windows to not rasterize.

chrome/renderer/print_web_view_helper.cc

 // 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.
 
 #include "chrome/renderer/print_web_view_helper.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/logging.h"
@@ skipping 57 matching lines @@
          !params.supports_alpha_blend;
 }
 
 }  // namespace
 
 PrepareFrameAndViewForPrint::PrepareFrameAndViewForPrint(
     const PrintMsg_Print_Params& print_params,
     WebFrame* frame,
     WebNode* node,
     WebView* web_view)
-        : frame_(frame), web_view_(web_view), expected_pages_count_(0),
-          use_browser_overlays_(true) {
+        : frame_(frame),
+          web_view_(web_view),
+          expected_pages_count_(0),
+          use_browser_overlays_(true),
+          finished_(false) {
   int dpi = GetDPI(&print_params);
   print_canvas_size_.set_width(
       ConvertUnit(print_params.printable_size.width(), dpi,
                   print_params.desired_dpi));
 
   print_canvas_size_.set_height(
       ConvertUnit(print_params.printable_size.height(), dpi,
                   print_params.desired_dpi));
 
   // Layout page according to printer page size. Since WebKit shrinks the
@@ skipping 13 matching lines @@
 
   WebNode node_to_print;
   if (node)
     node_to_print = *node;
   expected_pages_count_ = frame->printBegin(
       print_canvas_size_, node_to_print, static_cast<int>(print_params.dpi),
       &use_browser_overlays_);
 }
 
 PrepareFrameAndViewForPrint::~PrepareFrameAndViewForPrint() {
-  frame_->printEnd();
-  web_view_->resize(prev_view_size_);
-  if (WebFrame* web_frame = web_view_->mainFrame())
-    web_frame->setScrollOffset(prev_scroll_offset_);
+  FinishPrinting();
 }
 
+void PrepareFrameAndViewForPrint::FinishPrinting() {
+  if (!finished_) {
+    finished_ = true;
+    frame_->printEnd();
+    web_view_->resize(prev_view_size_);
+    if (WebFrame* web_frame = web_view_->mainFrame())
+      web_frame->setScrollOffset(prev_scroll_offset_);
+  }
+}
 
 PrintWebViewHelper::PrintWebViewHelper(RenderView* render_view)
     : RenderViewObserver(render_view),
       RenderViewObserverTracker<PrintWebViewHelper>(render_view),
       print_web_view_(NULL),
       script_initiated_preview_frame_(NULL),
       context_menu_preview_node_(NULL),
       user_cancelled_scripted_print_count_(0),
       notify_browser_of_print_failure_(true) {
   is_preview_ = switches::IsPrintPreviewEnabled();
@@ skipping 569 matching lines @@
 
 void PrintWebViewHelper::ResetScriptedPrintCount() {
   // Reset cancel counter on successful print.
   user_cancelled_scripted_print_count_ = 0;
 }
 
 void PrintWebViewHelper::IncrementScriptedPrintCount() {
   ++user_cancelled_scripted_print_count_;
   last_cancelled_script_print_ = base::Time::Now();
 }