Revert[2] SkDraw and all Blitters to use pixmap instead of bitmapi

src/core/SkCanvas.cpp

Index: src/core/SkCanvas.cpp
diff --git a/src/core/SkCanvas.cpp b/src/core/SkCanvas.cpp
index 30778fc13004df33bfb47d73fc37171237ecdf63..14372611f8cfbed8a667a0a3b9eeedaf853aa17f 100644
--- a/src/core/SkCanvas.cpp
+++ b/src/core/SkCanvas.cpp
@@ -270,7 +270,9 @@ public:
             fClip   = &((SkRasterClip*)&rec->fClip)->forceGetBW();
             fRC     = &rec->fClip;
             fDevice = rec->fDevice;
-            fBitmap = &fDevice->accessBitmap(true);
+            if (!fDevice->accessPixels(&fDst)) {
+                fDst.reset(fDevice->imageInfo(), NULL, 0);
+            }
             fPaint  = rec->fPaint;
             SkDEBUGCODE(this->validate();)