Split SkDevice into SkBaseDevice and SkBitmapDevice

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



git-svn-id: http://skia.googlecode.com/svn/trunk@10995 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gm/gm.h b/gm/gm.h
index b19bce3..022536d 100644
--- a/gm/gm.h
+++ b/gm/gm.h
@@ -9,8 +9,8 @@
 #define skiagm_DEFINED
 
 #include "SkBitmap.h"
+#include "SkBitmapDevice.h"
 #include "SkCanvas.h"
-#include "SkDevice.h"
 #include "SkPaint.h"
 #include "SkSize.h"
 #include "SkString.h"