Standardize usage of virtual/override/final in skia/

skia/ext/bitmap_platform_device_mac.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 SKIA_EXT_BITMAP_PLATFORM_DEVICE_MAC_H_
 #define SKIA_EXT_BITMAP_PLATFORM_DEVICE_MAC_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "skia/ext/platform_device.h"
@@ skipping 30 matching lines @@
   // then the bitmap is initialzed to 0.
   static BitmapPlatformDevice* CreateAndClear(int width, int height,
                                               bool is_opaque);
 
   // Creates a context for |data| and calls Create.
   // If |data| is NULL, then the bitmap backing store is not initialized.
   static BitmapPlatformDevice* CreateWithData(uint8_t* data,
                                               int width, int height,
                                               bool is_opaque);
 
-  virtual ~BitmapPlatformDevice();
+  ~BitmapPlatformDevice() override;
 
   // PlatformDevice overrides
-  virtual CGContextRef GetBitmapContext() override;
-  virtual void DrawToNativeContext(CGContextRef context, int x, int y,
-                                   const CGRect* src_rect) override;
+  CGContextRef GetBitmapContext() override;
+  void DrawToNativeContext(CGContextRef context,
+                           int x,
+                           int y,
+                           const CGRect* src_rect) override;
 
   // SkBaseDevice overrides
-  virtual void setMatrixClip(const SkMatrix& transform, const SkRegion& region,
-                             const SkClipStack&) override;
+  void setMatrixClip(const SkMatrix& transform,
+                     const SkRegion& region,
+                     const SkClipStack&) override;
 
  protected:
   BitmapPlatformDevice(CGContextRef context,
                        const SkBitmap& bitmap);
 
-  virtual SkBaseDevice* onCreateDevice(const SkImageInfo& info,
-                                       Usage usage) override;
+  SkBaseDevice* onCreateDevice(const SkImageInfo& info, Usage usage) override;
 
  private:
   void ReleaseBitmapContext();
 
   // Sets the transform and clip operations. This will not update the CGContext,
   // but will mark the config as dirty. The next call of LoadConfig will
   // pick up these changes.
   void SetMatrixClip(const SkMatrix& transform, const SkRegion& region);
 
   // Loads the current transform and clip into the context. Can be called even
@@ skipping 14 matching lines @@
   SkMatrix transform_;
 
   // The current clipping
   SkRegion clip_region_;
   DISALLOW_COPY_AND_ASSIGN(BitmapPlatformDevice);
 };
 
 }  // namespace skia
 
 #endif  // SKIA_EXT_BITMAP_PLATFORM_DEVICE_MAC_H_