Reapplies all the IPC system work (reverts the revert r56272).

printing/pdf_ps_metafile_cairo.cc

 // Copyright (c) 2010 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 "printing/pdf_ps_metafile_cairo.h"
 
 #include <stdio.h>
 
 #include <cairo.h>
 #include <cairo-pdf.h>
@@ skipping 52 matching lines @@
 }
 
 void DestroyContextData(void* data) {
   // Nothing to be done here.
 }
 
 }  // namespace
 
 namespace printing {
 
+PdfPsMetafile::PdfPsMetafile()
+    : format_(PDF),
+      surface_(NULL), context_(NULL) {
+}
+
 PdfPsMetafile::PdfPsMetafile(const FileFormat& format)
     : format_(format),
       surface_(NULL), context_(NULL) {
 }
 
 PdfPsMetafile::~PdfPsMetafile() {
   // Releases all resources if we forgot to do so.
   CleanUpAll();
 }
 
@@ skipping 201 matching lines @@
   data_.clear();
   skia::VectorPlatformDevice::ClearFontCache();
 }
 
 const double PdfPsMetafile::kTopMarginInInch = 0.25;
 const double PdfPsMetafile::kBottomMarginInInch = 0.56;
 const double PdfPsMetafile::kLeftMarginInInch = 0.25;
 const double PdfPsMetafile::kRightMarginInInch = 0.25;
 
 }  // namespace printing