Adding CreateFromData to NativeMetafileFactory

chrome/renderer/print_web_view_helper_linux.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 "base/file_descriptor_posix.h"
 #include "base/logging.h"
 #include "base/scoped_ptr.h"
 #include "chrome/common/render_messages.h"
@@ skipping 153 matching lines @@
                                                 frame->view());
     *page_count = prep_frame_view.GetExpectedPageCount();
     if (send_expected_page_count) {
       Send(new ViewHostMsg_DidGetPrintedPagesCount(routing_id(),
                                                    printParams.document_cookie,
                                                    *page_count));
     }
     if (!*page_count)
       return false;
 
-    metafile->Init();

[dpapad, 2011/03/24 19:54:04]

Now the metafile is already initialized before this method is called (in
PrintWebViewHelper::PrintPages and PrintWebViewHelper::CreatePreviewDocument).

-
     ViewMsg_PrintPage_Params page_params;
     page_params.params = printParams;
     const gfx::Size& canvas_size = prep_frame_view.GetPrintCanvasSize();
     if (params.pages.empty()) {
       for (int i = 0; i < *page_count; ++i) {
         page_params.page_number = i;
         PrintPage(page_params, canvas_size, frame, metafile, &canvas);
       }
     } else {
       for (size_t i = 0; i < params.pages.size(); ++i) {
@@ skipping 44 matching lines @@
   canvas->reset(new skia::VectorCanvas(device));
   frame->printPage(params.page_number, canvas->get());
 
   // TODO(myhuang): We should handle transformation for paper margins.
   // TODO(myhuang): We should render the header and the footer.
 
   // Done printing. Close the device context to retrieve the compiled metafile.
   if (!metafile->FinishPage())
     NOTREACHED() << "metafile failed";
 }