Move port/.../skia/public to skia/ext for Linux. Windows & Mac already moved ...

webkit/port/platform/graphics/skia/public/PlatformCanvasLinux.h

-// Copyright (c) 2006-2008 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 PlatformCanvasLinux_h
-#define PlatformCanvasLinux_h
-
-#include "PlatformDeviceLinux.h"
-
-namespace gfx {
-
-// This class is a specialization of the regular SkCanvas that is designed to
-// work with a gfx::PlatformDevice to manage platform-specific drawing. It
-// allows using both Skia operations and platform-specific operations.
-class PlatformCanvasLinux : public SkCanvas {
- public:
-  // Set is_opaque if you are going to erase the bitmap and not use
-  // tranparency: this will enable some optimizations.  The shared_section
-  // parameter is passed to gfx::PlatformDevice::create.  See it for details.
-  //
-  // If you use the version with no arguments, you MUST call initialize()
-  PlatformCanvasLinux();
-  PlatformCanvasLinux(int width, int height, bool is_opaque);
-  virtual ~PlatformCanvasLinux();
-
-  // For two-part init, call if you use the no-argument constructor above
-  bool initialize(int width, int height, bool is_opaque);
-
-  // Returns the platform device pointer of the topmost rect with a non-empty
-  // clip. Both the windows and mac versions have an equivalent of this method;
-  // a Linux version is added for compatibility.
-  PlatformDeviceLinux& getTopPlatformDevice() const;
-
- protected:
-  // Creates a device store for use by the canvas. We override this so that
-  // the device is always our own so we know that we can use GDI operations
-  // on it. Simply calls into createPlatformDevice().
-  virtual SkDevice* createDevice(SkBitmap::Config, int width, int height,
-                                 bool is_opaque, bool isForLayer);
-
-  // Creates a device store for use by the canvas. By default, it creates a
-  // BitmapPlatformDevice object. Can be overridden to change the object type.
-  virtual SkDevice* createPlatformDevice(int width, int height, bool is_opaque);
-
-  // Disallow copy and assign.
-  PlatformCanvasLinux(const PlatformCanvasLinux&);
-  PlatformCanvasLinux& operator=(const PlatformCanvasLinux&);
-};
-
-}  // namespace gfx
-
-#endif  // PlatformCanvasLinux_h