Add printing.dll to the component build.

printing/emf_win.h

 // 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.
 
 #ifndef PRINTING_EMF_WIN_H_
 #define PRINTING_EMF_WIN_H_
 
 #include <windows.h>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/gtest_prod_util.h"
 #include "printing/metafile.h"
 
 class FilePath;
 
 namespace gfx {
 class Point;
 class Rect;
 class Size;
 }
 
 namespace printing {
 
 // Simple wrapper class that manage an EMF data stream and its virtual HDC.
-class Emf : public Metafile {
+class PRINTING_EXPORT Emf : public Metafile {
  public:
   class Record;
   class Enumerator;
   struct EnumerationContext;
 
   // Generates a virtual HDC that will record every GDI commands and compile
   // it in a EMF data stream.
   Emf();
   virtual ~Emf();
 
@@ skipping 74 matching lines @@
 };
 
 struct Emf::EnumerationContext {
   HANDLETABLE* handle_table;
   int objects_count;
   HDC hdc;
 };
 
 // One EMF record. It keeps pointers to the EMF buffer held by Emf::emf_.
 // The entries become invalid once Emf::CloseEmf() is called.
-class Emf::Record {
+class PRINTING_EXPORT Emf::Record {
  public:
   // Plays the record.
   bool Play() const;
 
   // Plays the record working around quirks with SetLayout,
   // SetWorldTransform and ModifyWorldTransform. See implementation for details.
   bool SafePlayback(const XFORM* base_matrix) const;
 
   // Access the underlying EMF record.
   const ENHMETARECORD* record() const { return record_; }
 
  protected:
   Record(const EnumerationContext* context,
          const ENHMETARECORD* record);
 
  private:
   friend class Emf;
   friend class Enumerator;
   const ENHMETARECORD* record_;
   const EnumerationContext* context_;
 };
 
 // Retrieves individual records out of a Emf buffer. The main use is to skip
 // over records that are unsupported on a specific printer or to play back
 // only a part of an EMF buffer.
-class Emf::Enumerator {
+class PRINTING_EXPORT Emf::Enumerator {
  public:
   // Iterator type used for iterating the records.
   typedef std::vector<Record>::const_iterator const_iterator;
 
   // Enumerates the records at construction time. |hdc| and |rect| are
   // both optional at the same time or must both be valid.
   // Warning: |emf| must be kept valid for the time this object is alive.
   Enumerator(const Emf& emf, HDC hdc, const RECT* rect);
 
   // Retrieves the first Record.
@@ skipping 16 matching lines @@
   std::vector<Record> items_;
 
   EnumerationContext context_;
 
   DISALLOW_COPY_AND_ASSIGN(Enumerator);
 };
 
 }  // namespace printing
 
 #endif  // PRINTING_EMF_WIN_H_