Modify SkDeferredCanvas so that it uses its inherited SkCanvas to track matrix and clipping state
Removed 'virtual' from a few canvas methods that no longer need it thanks to this change.

BUG=http://code.google.com/p/skia/issues/detail?id=506
TEST=Canvas unit test
REVIEW=http://codereview.appspot.com/5697052/



git-svn-id: http://skia.googlecode.com/svn/trunk@3261 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/include/utils/SkDeferredCanvas.h b/include/utils/SkDeferredCanvas.h
index e06ea81..87797ac 100644
--- a/include/utils/SkDeferredCanvas.h
+++ b/include/utils/SkDeferredCanvas.h
@@ -80,14 +80,13 @@
     virtual int saveLayer(const SkRect* bounds, const SkPaint* paint,
                           SaveFlags flags) SK_OVERRIDE;
     virtual void restore() SK_OVERRIDE;
-    virtual int getSaveCount() const SK_OVERRIDE;
+    virtual bool isDrawingToLayer() const SK_OVERRIDE;
     virtual bool translate(SkScalar dx, SkScalar dy) SK_OVERRIDE;
     virtual bool scale(SkScalar sx, SkScalar sy) SK_OVERRIDE;
     virtual bool rotate(SkScalar degrees) SK_OVERRIDE;
     virtual bool skew(SkScalar sx, SkScalar sy) SK_OVERRIDE;
     virtual bool concat(const SkMatrix& matrix) SK_OVERRIDE;
     virtual void setMatrix(const SkMatrix& matrix) SK_OVERRIDE;
-    virtual const SkMatrix& getTotalMatrix() const SK_OVERRIDE;
     virtual bool clipRect(const SkRect& rect, SkRegion::Op op,
                           bool doAntiAlias) SK_OVERRIDE;
     virtual bool clipPath(const SkPath& path, SkRegion::Op op,