PdfMetafileSkia gives out a SkCanvas, not a SkBaseDevice.

android_webview/renderer/print_web_view_helper.cc

 // Copyright 2013 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.
 
 // TODO(sgurun) copied from chrome/renderer. Remove after crbug.com/322276
 
 #include "android_webview/renderer/print_web_view_helper.h"
 
 #include <string>
 
 #include "android_webview/common/print_messages.h"
 #include "base/auto_reset.h"
 #include "base/command_line.h"
 #include "base/json/json_writer.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/process/process_handle.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/public/common/web_preferences.h"
 #include "content/public/renderer/render_thread.h"
 #include "content/public/renderer/render_view.h"
 #include "net/base/escape.h"
 #include "printing/pdf_metafile_skia.h"
 #include "printing/units.h"
-#include "skia/ext/vector_platform_device_skia.h"
 #include "third_party/WebKit/public/platform/WebSize.h"
 #include "third_party/WebKit/public/platform/WebURLRequest.h"
 #include "third_party/WebKit/public/web/WebConsoleMessage.h"
 #include "third_party/WebKit/public/web/WebDocument.h"
 #include "third_party/WebKit/public/web/WebElement.h"
 #include "third_party/WebKit/public/web/WebFrameClient.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 #include "third_party/WebKit/public/web/WebPlugin.h"
 #include "third_party/WebKit/public/web/WebPluginDocument.h"
 #include "third_party/WebKit/public/web/WebPrintParams.h"
@@ skipping 380 matching lines @@
 void PrintWebViewHelper::PrintHeaderAndFooter(
     blink::WebCanvas* canvas,
     int page_number,
     int total_pages,
     float webkit_scale_factor,
     const PageSizeMargins& page_layout,
     const base::DictionaryValue& header_footer_info,
     const PrintMsg_Print_Params& params) {
 #if 0
   // TODO(sgurun) android_webview hack
-  skia::VectorPlatformDeviceSkia* device =
-      static_cast<skia::VectorPlatformDeviceSkia*>(canvas->getTopDevice());
-  device->setDrawingArea(SkPDFDevice::kMargin_DrawingArea);
-
   SkAutoCanvasRestore auto_restore(canvas, true);
   canvas->scale(1 / webkit_scale_factor, 1 / webkit_scale_factor);
 
   blink::WebSize page_size(page_layout.margin_left + page_layout.margin_right +
                             page_layout.content_width,
                             page_layout.margin_top + page_layout.margin_bottom +
                             page_layout.content_height);
 
   blink::WebView* web_view = blink::WebView::create(NULL);
   web_view->settings()->setJavaScriptEnabled(true);
@@ skipping 18 matching lines @@
 
   blink::WebPrintParams webkit_params(page_size);
   webkit_params.printerDPI = GetDPI(&params);
 
   frame->printBegin(webkit_params, WebKit::WebNode(), NULL);
   frame->printPage(0, canvas);
   frame->printEnd();
 
   web_view->close();
   frame->close();
-
-  device->setDrawingArea(SkPDFDevice::kContent_DrawingArea);
 #endif
 }
 
 // static - Not anonymous so that platform implementations can use it.
 float PrintWebViewHelper::RenderPageContent(blink::WebFrame* frame,
                                             int page_number,
                                             const gfx::Rect& canvas_area,
                                             const gfx::Rect& content_area,
                                             double scale_factor,
                                             blink::WebCanvas* canvas) {
@@ skipping 1532 matching lines @@
 }
 
 void PrintWebViewHelper::PrintPreviewContext::ClearContext() {
   prep_frame_view_.reset();
   metafile_.reset();
   pages_to_render_.clear();
   error_ = PREVIEW_ERROR_NONE;
 }
 
 }  // namespace printing