Revert of Revert of SkDrawCommand scrubbing

src/utils/debugger/SkDebugCanvas.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 "SkColorPriv.h"
@@ skipping 361 matching lines @@
     SkASSERT(index < fCommandVector.count());
     return fCommandVector[index];
 }
 
 void SkDebugCanvas::setDrawCommandAt(int index, SkDrawCommand* command) {
     SkASSERT(index < fCommandVector.count());
     delete fCommandVector[index];
     fCommandVector[index] = command;
 }
 
-SkTDArray<SkString*>* SkDebugCanvas::getCommandInfo(int index) {
+const SkTDArray<SkString*>* SkDebugCanvas::getCommandInfo(int index) const {
     SkASSERT(index < fCommandVector.count());
     return fCommandVector[index]->Info();
 }
 
 bool SkDebugCanvas::getDrawCommandVisibilityAt(int index) {
     SkASSERT(index < fCommandVector.count());
     return fCommandVector[index]->isVisible();
 }
 
 const SkTDArray <SkDrawCommand*>& SkDebugCanvas::getDrawCommands() const {
@@ skipping 340 matching lines @@
 }
 
 bool SkDebugCanvas::lastClipStackData(const SkPath& devPath) {
     if (fCalledAddStackData) {
         fClipStackData.appendf("<br>");
         addPathData(devPath, "pathOut");
         return true;
     }
     return false;
 }