Change clear() to respect the clip

src/utils/SkPictureUtils.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBBoxHierarchy.h"
 #include "SkBitmapDevice.h"
 #include "SkCanvas.h"
@@ skipping 59 matching lines @@
     }
     virtual void lockPixels() SK_OVERRIDE { nothing_to_do(); }
     virtual void unlockPixels() SK_OVERRIDE { nothing_to_do(); }
     virtual bool allowImageFilter(const SkImageFilter*) SK_OVERRIDE { return false; }
     virtual bool canHandleImageFilter(const SkImageFilter*) SK_OVERRIDE { return false; }
     virtual bool filterImage(const SkImageFilter*, const SkBitmap&, const SkImageFilter::Context&,
                              SkBitmap* result, SkIPoint* offset) SK_OVERRIDE {
         return false;
     }
 
-    virtual void clear(SkColor color) SK_OVERRIDE {
-        nothing_to_do();
-    }
-
     virtual void drawPaint(const SkDraw&, const SkPaint& paint) SK_OVERRIDE {
         this->addBitmapFromPaint(paint);
     }
     virtual void drawPoints(const SkDraw&, SkCanvas::PointMode mode, size_t count,
                             const SkPoint[], const SkPaint& paint) SK_OVERRIDE {
         this->addBitmapFromPaint(paint);
     }
     virtual void drawRect(const SkDraw&, const SkRect&,
                           const SkPaint& paint) SK_OVERRIDE {
         this->addBitmapFromPaint(paint);
@@ skipping 138 matching lines @@
     if (pict->fBBH.get()) {
         byteCount += pict->fBBH->bytesUsed();
     }
     MeasureRecords visitor;
     for (unsigned curOp = 0; curOp < pict->fRecord->count(); curOp++) {
         byteCount += pict->fRecord->visit<size_t>(curOp, visitor);
     }
 
     return byteCount;
 }