introduce Props to surface

include/core/SkCanvas.h

Index: include/core/SkCanvas.h
diff --git a/include/core/SkCanvas.h b/include/core/SkCanvas.h
index 5088d7ded5268b9e86808c3c7d0148c7bcc891a4..3f9ebfd0ba21573ff0e9d4c1becb0121a14d05ae 100644
--- a/include/core/SkCanvas.h
+++ b/include/core/SkCanvas.h
@@ -16,6 +16,7 @@
 #include "SkRefCnt.h"
 #include "SkPath.h"
 #include "SkRegion.h"
+#include "SkSurfaceProps.h"
 #include "SkXfermode.h"
 
 #ifdef SK_SUPPORT_LEGACY_DRAWTEXT_VIRTUAL
@@ -1282,6 +1283,8 @@ private:
     // the first N recs that can fit here mean we won't call malloc
     uint32_t    fMCRecStorage[32];
 
+    const SkSurfaceProps fProps;
+
     int         fSaveLayerCount;    // number of successful saveLayer calls
     int         fCullCount;         // number of active culls
 
@@ -1311,14 +1314,20 @@ private:
         kDefault_InitFlags                  = 0,
         kConservativeRasterClip_InitFlag    = 1 << 0,
     };
-    SkCanvas(int width, int height, InitFlags flags);
-    SkCanvas(SkBaseDevice*, InitFlags flags);
+    SkCanvas(int width, int height, InitFlags);
+    SkCanvas(SkBaseDevice*, const SkSurfaceProps*, InitFlags);
+    SkCanvas(const SkBitmap&, const SkSurfaceProps&);
 
     // needs gettotalclip()
     friend SkCanvasState* SkCanvasStateUtils::CaptureCanvasState(SkCanvas*);
     
     SkBaseDevice* createLayerDevice(const SkImageInfo&);
 
+    // call this each time we attach ourselves to a device
+    //  - constructor
+    //  - internalSaveLayer
+    void setupDevice(SkBaseDevice*);
+
     SkBaseDevice* init(SkBaseDevice*, InitFlags);
 
     /**