Split SkDevice into SkBaseDevice and SkBitmapDevice

include/device/xps/SkXPSDevice.h

Index: include/device/xps/SkXPSDevice.h
===================================================================
--- include/device/xps/SkXPSDevice.h	(revision 10711)
+++ include/device/xps/SkXPSDevice.h	(working copy)
@@ -30,7 +30,7 @@
 
     The drawing context for the XPS backend.
 */
-class SkXPSDevice : public SkDevice {
+class SkXPSDevice : public SkRasterDevice {
 public:
     SK_API SkXPSDevice();
     SK_API virtual ~SkXPSDevice();
@@ -308,17 +308,16 @@
         IXpsOMPath* shadedPath);
 
     // override from SkDevice
-    virtual SkDevice* onCreateCompatibleDevice(
-        SkBitmap::Config config,
-        int width, int height,
-        bool isOpaque,
-        Usage usage) SK_OVERRIDE;
+    virtual SkDevice* onCreateCompatibleDevice(SkBitmap::Config config,
+                                               int width, int height,
+                                               bool isOpaque,
+                                               Usage usage) SK_OVERRIDE;
 
     // Disable the default copy and assign implementation.
     SkXPSDevice(const SkXPSDevice&);
     void operator=(const SkXPSDevice&);
 
-    typedef SkDevice INHERITED;
+    typedef SkRasterDevice INHERITED;
 };
 
 #endif