Split SkDevice out of SkBitmapDevice

https://codereview.chromium.org/22978012/



git-svn-id: http://skia.googlecode.com/svn/trunk@10830 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gm/deviceproperties.cpp b/gm/deviceproperties.cpp
index 5739b57..8bca4b7 100644
--- a/gm/deviceproperties.cpp
+++ b/gm/deviceproperties.cpp
@@ -44,7 +44,7 @@
             SkDeviceProperties::Geometry::Make(SkDeviceProperties::Geometry::kVertical_Orientation,
                                                SkDeviceProperties::Geometry::kBGR_Layout),
             SK_Scalar1);
-        SkDevice device(bitmap, properties);
+        SkBitmapDevice device(bitmap, properties);
         SkCanvas canvas(&device);
         canvas.drawColor(SK_ColorWHITE);