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

tools/debugger/SkDrawCommand.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SKDRAWCOMMAND_H_
 #define SKDRAWCOMMAND_H_
 
@@ skipping 36 matching lines @@
         kDrawRRect_OpType,
         kDrawText_OpType,
         kDrawTextBlob_OpType,
         kDrawTextOnPath_OpType,
         kDrawVertices_OpType,
         kEndDrawPicture_OpType,
         kRestore_OpType,
         kSave_OpType,
         kSaveLayer_OpType,
         kSetMatrix_OpType,
+        kTranslateZ_OpType,
 
-        kLast_OpType = kSetMatrix_OpType
+        kLast_OpType = kTranslateZ_OpType
     };
 
     static const int kOpTypeCount = kLast_OpType + 1;
 
     static void WritePNG(const png_bytep rgba, png_uint_32 width, png_uint_32 height,
                          SkWStream& out, bool isOpaque);
 
     SkDrawCommand(OpType opType);
 
     virtual ~SkDrawCommand();
@@ skipping 47 matching lines @@
 
     static const char* GetCommandString(OpType type);
 
     // Helper methods for converting things to JSON
     static Json::Value MakeJsonColor(const SkColor color);
     static Json::Value MakeJsonPoint(const SkPoint& point);
     static Json::Value MakeJsonPoint(SkScalar x, SkScalar y);
     static Json::Value MakeJsonRect(const SkRect& rect);
     static Json::Value MakeJsonIRect(const SkIRect&);
     static Json::Value MakeJsonMatrix(const SkMatrix&);
+    static Json::Value MakeJsonScalar(SkScalar);
     static Json::Value MakeJsonPath(const SkPath& path);
     static Json::Value MakeJsonRegion(const SkRegion& region);
     static Json::Value MakeJsonPaint(const SkPaint& paint, UrlDataManager& urlDataManager);
 
     static void flatten(const SkFlattenable* flattenable, Json::Value* target,
                         UrlDataManager& urlDataManager);
     static bool flatten(const SkImage& image, Json::Value* target,
                         UrlDataManager& urlDataManager);
     static bool flatten(const SkBitmap& bitmap, Json::Value* target,
                         UrlDataManager& urlDataManager);
@@ skipping 566 matching lines @@
     Json::Value toJSON(UrlDataManager& urlDataManager) const override;
     static SkSetMatrixCommand* fromJSON(Json::Value& command, UrlDataManager& urlDataManager);
 
 private:
     SkMatrix fUserMatrix;
     SkMatrix fMatrix;
 
     typedef SkDrawCommand INHERITED;
 };
 
+class SkTranslateZCommand : public SkDrawCommand {
+public:
+    SkTranslateZCommand(SkScalar);
+    void execute(SkCanvas* canvas) const override;
+    Json::Value toJSON(UrlDataManager& urlDataManager) const override;
+    static SkTranslateZCommand* fromJSON(Json::Value& command, UrlDataManager& urlDataManager);
+
+private:
+    SkScalar fZTranslate;
+
+    typedef SkDrawCommand INHERITED;
+};
 #endif