Added the framework for having canvas/recorder/picture record depth_set's.

tools/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 "SkCanvasPriv.h"
 #include "SkClipStack.h"
 #include "SkDebugCanvas.h"
@@ skipping 667 matching lines @@
     (void)this->INHERITED::getSaveLayerStrategy(rec);
     // No need for a full layer.
     return kNoLayer_SaveLayerStrategy;
 }
 
 void SkDebugCanvas::didSetMatrix(const SkMatrix& matrix) {
     this->addDrawCommand(new SkSetMatrixCommand(matrix));
     this->INHERITED::didSetMatrix(matrix);
 }
 
+void SkDebugCanvas::didTranslateZ(SkScalar z) {
+    this->addDrawCommand(new SkTranslateZCommand(z));
+    this->INHERITED::didTranslateZ(z);
+}
+
 void SkDebugCanvas::toggleCommand(int index, bool toggle) {
     SkASSERT(index < fCommandVector.count());
     fCommandVector[index]->setVisible(toggle);
 }
 
 static const char* gFillTypeStrs[] = {
     "kWinding_FillType",
     "kEvenOdd_FillType",
     "kInverseWinding_FillType",
     "kInverseEvenOdd_FillType"
@@ skipping 109 matching lines @@
 }
 
 bool SkDebugCanvas::lastClipStackData(const SkPath& devPath) {
     if (fCalledAddStackData) {
         fClipStackData.appendf("<br>");
         addPathData(devPath, "pathOut");
         return true;
     }
     return false;
 }