win: Work on reducing number of style plugin warnings.

ui/gfx/platform_font_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 UI_GFX_PLATFORM_FONT_WIN_H_
 #define UI_GFX_PLATFORM_FONT_WIN_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 67 matching lines @@
                                     TEXTMETRIC* text_metrics);
 
   // Returns the size of the font based on the font information passed in.
   static int GetFontSize(const LOGFONT& font_info);
 
  private:
   FRIEND_TEST_ALL_PREFIXES(RenderTextTest, HarfBuzz_UniscribeFallback);
   FRIEND_TEST_ALL_PREFIXES(PlatformFontWinTest, Metrics_SkiaVersusGDI);
   FRIEND_TEST_ALL_PREFIXES(PlatformFontWinTest, DirectWriteFontSubstitution);
 
-  ~PlatformFontWin() override {}
+  ~PlatformFontWin() override;
 
   // Chrome text drawing bottoms out in the Windows GDI functions that take an
   // HFONT (an opaque handle into Windows). To avoid lots of GDI object
   // allocation and destruction, Font indirectly refers to the HFONT by way of
   // an HFontRef. That is, every Font has an HFontRef, which has an HFONT.
   //
   // HFontRef is reference counted. Upon deletion, it deletes the HFONT.
   // By making HFontRef maintain the reference to the HFONT, multiple
   // HFontRefs can share the same HFONT, and Font can provide value semantics.
   class GFX_EXPORT HFontRef : public base::RefCounted<HFontRef> {
@@ skipping 100 matching lines @@
 
   // Pointer to the global IDWriteFactory interface.
   static IDWriteFactory* direct_write_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PlatformFontWin);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GFX_PLATFORM_FONT_WIN_H_