CL removing inheritance of SkDevice from PlatformDevice. Flavours of PlatformDevice classes now ...

skia/ext/platform_device_linux.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 SKIA_EXT_PLATFORM_DEVICE_LINUX_H_
-#define SKIA_EXT_PLATFORM_DEVICE_LINUX_H_
-#pragma once
-
-#include "skia/ext/platform_device.h"
-#include "third_party/skia/include/core/SkDevice.h"
-
-namespace skia {
-
-// Blindly copying the mac hierarchy.
-class PlatformDevice : public SkDevice {
- public:
-  typedef cairo_t* PlatformSurface;
-
-  // Returns if native platform APIs are allowed to render text to this device.
-  virtual bool IsNativeFontRenderingAllowed();
-
-  virtual PlatformSurface BeginPlatformPaint() = 0;
-  virtual void EndPlatformPaint();
-
-  virtual void DrawToNativeContext(PlatformSurface surface, int x, int y,
-                                   const PlatformRect* src_rect );
-                                   
-  // Sets the opacity of each pixel in the specified region to be opaque.
-  virtual void MakeOpaque(int x, int y, int width, int height) { }
-
- protected:
-  // Forwards |bitmap| to SkDevice's constructor.
-  explicit PlatformDevice(const SkBitmap& bitmap);
-};
-
-}  // namespace skia
-
-#endif  // SKIA_EXT_PLATFORM_DEVICE_LINUX_H_