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

skia/ext/platform_device.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_H_
 #define SKIA_EXT_PLATFORM_DEVICE_H_
 #pragma once
 
 // This file provides an easy way to include the appropriate PlatformDevice
 // header file for your platform.
@@ skipping 37 matching lines @@
 // BitmapPlatformDevice classes inherit directly from SkDevice, which is no
 // longer a supported usage-pattern for skia.  In preparation of the removal of
 // these classes, all calls to PlatformDevice::* should be routed through these
 // helper functions.
 
 // Bind a PlatformDevice instance, |platform_device| to |device|.  Subsequent
 // calls to the functions exported below will forward the request to the
 // corresponding method on the bound PlatformDevice instance.    If no
 // PlatformDevice has been bound to the SkDevice passed, then the routines are
 // NOPS.
+// Pass |transfer_ownership| as true ensure that |platform_device| has the same
+// lifetime as |device|.
 SK_API void SetPlatformDevice(SkDevice* device,
-                              PlatformDevice* platform_device);
+                              PlatformDevice* platform_device,
+                              bool transfer_ownership);
 SK_API PlatformDevice* GetPlatformDevice(SkDevice* device);
 
 }  // namespace skia
 
 #if defined(WIN32)
 #include "skia/ext/platform_device_win.h"
 #elif defined(__APPLE__)
 #include "skia/ext/platform_device_mac.h"
 #elif defined(__linux__) || defined(__FreeBSD__) || defined(__OpenBSD__) || \
       defined(__sun)
 #include "skia/ext/platform_device_linux.h"
 #endif
 
 #endif