Delete temporarily dir for PDF to EMF conversion after all EMF files closed.

printing/emf_win.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 "printing/emf_win.h"
 
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/win/scoped_gdi_object.h"
@@ skipping 151 matching lines @@
     ExtEscape(dc, escape, size, reinterpret_cast<LPCSTR>(bits),
               sizeof(supported), reinterpret_cast<LPSTR>(&supported));
   }
   return !!supported;
 }
 
 Emf::Emf() : emf_(NULL), hdc_(NULL), page_count_(0) {
 }
 
 Emf::~Emf() {
+  Close();
+}
+
+void Emf::Close() {
   DCHECK(!hdc_);
   if (emf_)
     DeleteEnhMetaFile(emf_);
+  emf_ = NULL;
 }
 
 bool Emf::InitToFile(const base::FilePath& metafile_path) {
   DCHECK(!emf_ && !hdc_);
   hdc_ = CreateEnhMetaFile(NULL, metafile_path.value().c_str(), NULL, NULL);
   DCHECK(hdc_);
   return hdc_ != NULL;
 }
 
 bool Emf::InitFromFile(const base::FilePath& metafile_path) {
@@ skipping 484 matching lines @@
   RECT rect = page_bounds.ToRECT();
   ::EnumEnhMetaFile(hdc, emf(), &RasterizeAlphaBlendProc, &bitmap_dc, &rect);
 
   result->FinishDocument();
 
   return result.release();
 }
 
 
 }  // namespace printing