Image filters: Make a recursive, forward-mapping bounds traversal.

src/effects/SkTileImageFilter.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkTileImageFilter.h"
 #include "SkBitmap.h"
 #include "SkCanvas.h"
@@ skipping 98 matching lines @@
 }
 
 void SkTileImageFilter::onFilterNodeBounds(const SkIRect& src, const SkMatrix& ctm,
                                           SkIRect* dst, MapDirection direction) const {
     SkRect rect = kReverse_MapDirection == direction ? fSrcRect : fDstRect;
     ctm.mapRect(&rect);
     rect.roundOut(dst);
 }
 
 bool SkTileImageFilter::onFilterBounds(const SkIRect& src, const SkMatrix& ctm,
-                                       SkIRect* dst) const {
-    this->onFilterNodeBounds(src, ctm, dst, kReverse_MapDirection);
+                                       SkIRect* dst, MapDirection direction) const {
+    // Don't recurse into inputs.
+    *dst = src;
     return true;
 }
 
 void SkTileImageFilter::computeFastBounds(const SkRect& src, SkRect* dst) const {
     *dst = fDstRect;
 }
 
 SkFlattenable* SkTileImageFilter::CreateProc(SkReadBuffer& buffer) {
     SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1);
     SkRect src, dst;
@@ skipping 16 matching lines @@
     str->appendf(" dst: %.2f %.2f %.2f %.2f",
                  fDstRect.fLeft, fDstRect.fTop, fDstRect.fRight, fDstRect.fBottom);
     if (this->getInput(0)) {
         str->appendf("input: (");
         this->getInput(0)->toString(str);
         str->appendf(")");
     }
     str->append(")");
 }
 #endif