win: Fix remaining plugin warnings in ash, device, printing, sandbox.

printing/emf_win.h

 // 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.
 
 #ifndef PRINTING_EMF_WIN_H_
 #define PRINTING_EMF_WIN_H_
 
 #include <windows.h>
 
 #include <vector>
@@ skipping 56 matching lines @@
                  const float& scale_factor) override;
   bool FinishPage() override;
   bool FinishDocument() override;
 
   uint32 GetDataSize() const override;
   bool GetData(void* buffer, uint32 size) const override;
 
   // Should be passed to Playback to keep the exact same size.
   gfx::Rect GetPageBounds(unsigned int page_number) const override;
 
-  unsigned int GetPageCount() const override { return 1; }
-
-  HDC context() const override {
-    return hdc_;
-  }
-
+  unsigned int GetPageCount() const override;
+  HDC context() const override;
   bool Playback(HDC hdc, const RECT* rect) const override;
   bool SafePlayback(HDC hdc) const override;
 
   HENHMETAFILE emf() const { return emf_; }
 
   // Returns true if metafile contains alpha blend.
   bool IsAlphaBlendUsed() const;
 
   // Returns new metafile with only bitmap created by playback of the current
   // metafile. Returns NULL if fails.
@@ skipping 63 matching lines @@
 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);
 
+  ~Enumerator();
+
   // Retrieves the first Record.
   const_iterator begin() const;
 
   // Retrieves the end of the array.
   const_iterator end() const;
 
  private:
   FRIEND_TEST_ALL_PREFIXES(EmfPrintingTest, Enumerate);
 
   // Processes one EMF record and saves it in the items_ array.
   static int CALLBACK EnhMetaFileProc(HDC hdc,
                                       HANDLETABLE* handle_table,
                                       const ENHMETARECORD* record,
                                       int objects_count,
                                       LPARAM param);
 
   // The collection of every EMF records in the currently loaded EMF buffer.
   // Initialized by Enumerate(). It keeps pointers to the EMF buffer held by
   // Emf::emf_. The entries become invalid once Emf::CloseEmf() is called.
   std::vector<Record> items_;
 
   EnumerationContext context_;
 
   DISALLOW_COPY_AND_ASSIGN(Enumerator);
 };
 
 }  // namespace printing
 
 #endif  // PRINTING_EMF_WIN_H_