Add deduping capability to SkPathHeap

src/core/SkPictureRecord.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkPictureRecord.h"
 #include "SkTSearch.h"
 #include "SkPixelRef.h"
@@ skipping 1626 matching lines @@
 
 void SkPictureRecord::addFlatPaint(const SkFlatData* flatPaint) {
     int index = flatPaint ? flatPaint->index() : 0;
     this->addInt(index);
 }
 
 int SkPictureRecord::addPathToHeap(const SkPath& path) {
     if (NULL == fPathHeap) {
         fPathHeap = SkNEW(SkPathHeap);
     }
+#ifdef SK_DEDUP_PICTURE_PATHS
+    return fPathHeap->insert(path);
+#else
     return fPathHeap->append(path);
+#endif
 }
 
 void SkPictureRecord::addPath(const SkPath& path) {
     this->addInt(this->addPathToHeap(path));
 }
 
 void SkPictureRecord::addPicture(SkPicture& picture) {
     int index = fPictureRefs.find(&picture);
     if (index < 0) {    // not found
         index = fPictureRefs.count();
@@ skipping 196 matching lines @@
 void SkPictureRecord::validateRegions() const {
     int count = fRegions.count();
     SkASSERT((unsigned) count < 0x1000);
     for (int index = 0; index < count; index++) {
         const SkFlatData* region = fRegions[index];
         SkASSERT(region);
 //        region->validate();
     }
 }
 #endif