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

skia/ext/platform_device_mac.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"
 #include "skia/ext/bitmap_platform_device.h"
 
 #import <ApplicationServices/ApplicationServices.h>
 #include "skia/ext/skia_utils_mac.h"
 #include "third_party/skia/include/core/SkMatrix.h"
 #include "third_party/skia/include/core/SkPath.h"
 #include "third_party/skia/include/core/SkTypes.h"
 #include "third_party/skia/include/core/SkUtils.h"
 
 namespace skia {
 
 CGContextRef GetBitmapContext(SkDevice* device) {
   PlatformDevice* platform_device = GetPlatformDevice(device);
   if (platform_device)
     return platform_device->GetBitmapContext();
 
   return NULL;
 }
 
-PlatformDevice::PlatformDevice(const SkBitmap& bitmap)
-    : SkDevice(bitmap) {
-  SetPlatformDevice(this, this);
-}
+PlatformDevice::PlatformDevice(SkDevice* device)
+    : device_(device) {
+} 
 
 bool PlatformDevice::IsNativeFontRenderingAllowed() {
     return true;
 }
 
 CGContextRef PlatformDevice::BeginPlatformPaint() {
   return GetBitmapContext();
 }
 
 void PlatformDevice::EndPlatformPaint() {
@@ skipping 117 matching lines @@
     path.transform(transformation);
     // TODO(playmobil): Implement.
     SkASSERT(false);
     // LoadPathToDC(context, path);
     // hrgn = PathToRegion(context);
   }
 }
 
 }  // namespace skia