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

skia/ext/platform_device_linux.cc

 // 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.
 
 #include "skia/ext/platform_device.h"
 
 namespace skia {
 
-PlatformDevice::PlatformDevice(const SkBitmap& bitmap)
-    : SkDevice(bitmap) {
-  SetPlatformDevice(this, this);
+PlatformDevice::PlatformDevice(SkDevice* device) : device_(device) {
 }
 
 bool PlatformDevice::IsNativeFontRenderingAllowed() {
   return true;
 }
 
 void PlatformDevice::EndPlatformPaint() {
   // We don't need to do anything on Linux here.
 }
 
 void PlatformDevice::DrawToNativeContext(PlatformSurface surface, int x, int y,
                                          const PlatformRect* src_rect) {
   // Should never be called on Linux.
   SkASSERT(false);
 }
 
 }  // namespace skia