Fix memory leak in GPU Picture optimization

src/gpu/GrPictureUtils.h

Index: src/gpu/GrPictureUtils.h
===================================================================
--- src/gpu/GrPictureUtils.h	(revision 14586)
+++ src/gpu/GrPictureUtils.h	(working copy)
@@ -45,6 +45,12 @@
 
     GPUAccelData(Key key) : INHERITED(key) { }
 
+    virtual ~GPUAccelData() {
+        for (int i = 0; i < fSaveLayerInfo.count(); ++i) {
+            SkDELETE(fSaveLayerInfo[i].fPaint);
+        }
+    }
+
     void addSaveLayerInfo(const SaveLayerInfo& info) {
         SkASSERT(info.fSaveLayerOpID < info.fRestoreOpID);
         *fSaveLayerInfo.push() = info;