Revert of Picture Recording: fix the performance bottleneck in SkDeferredCanvas::isFullFrame

include/utils/SkDeferredCanvas.h

Index: include/utils/SkDeferredCanvas.h
diff --git a/include/utils/SkDeferredCanvas.h b/include/utils/SkDeferredCanvas.h
index 5f781f88594e4fb48ece47189ff37bd80dddc5d6..907cb91575043b1cfba2f16c1b27e4d6982c0516 100644
--- a/include/utils/SkDeferredCanvas.h
+++ b/include/utils/SkDeferredCanvas.h
@@ -87,11 +87,6 @@
      *  conservatively, so it may report false negatives.
      */
     bool isFreshFrame() const;
-
-    /**
-     * Returns canvas's size.
-     */
-    SkISize getCanvasSize() const;
 
     /**
      *  Returns true if the canvas has recorded draw commands that have
@@ -255,9 +250,6 @@
     size_t fBitmapSizeThreshold;
     bool   fDeferredDrawing;
 
-    mutable SkISize fCachedCanvasSize;
-    mutable bool    fCachedCanvasSizeDirty;
-
     friend class SkDeferredCanvasTester; // for unit testing
     typedef SkCanvas INHERITED;
 };