Change clear() to respect the clip

include/utils/SkDeferredCanvas.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkDeferredCanvas_DEFINED
 #define SkDeferredCanvas_DEFINED
 
@@ skipping 127 matching lines @@
     void setBitmapSizeThreshold(size_t sizeThreshold);
     size_t getBitmapSizeThreshold() const { return fBitmapSizeThreshold; }
 
     /**
      * Executes all pending commands without drawing
      */
     void silentFlush();
 
     // Overrides of the SkCanvas interface
     virtual bool isDrawingToLayer() const SK_OVERRIDE;
-    virtual void clear(SkColor) SK_OVERRIDE;
     virtual void drawPaint(const SkPaint& paint) SK_OVERRIDE;
     virtual void drawPoints(PointMode mode, size_t count, const SkPoint pts[],
                             const SkPaint& paint) SK_OVERRIDE;
     virtual void drawOval(const SkRect&, const SkPaint& paint) SK_OVERRIDE;
     virtual void drawRect(const SkRect& rect, const SkPaint& paint) SK_OVERRIDE;
     virtual void drawRRect(const SkRRect&, const SkPaint& paint) SK_OVERRIDE;
     virtual void drawPath(const SkPath& path, const SkPaint& paint)
                           SK_OVERRIDE;
     virtual void drawBitmap(const SkBitmap& bitmap, SkScalar left,
                             SkScalar top, const SkPaint* paint)
@@ skipping 97 matching lines @@
 
     mutable SkISize fCachedCanvasSize;
     mutable bool    fCachedCanvasSizeDirty;
 
     friend class SkDeferredCanvasTester; // for unit testing
     typedef SkCanvas INHERITED;
 };
 
 
 #endif