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

tools/debugger/SkDrawCommand.cpp

Index: tools/debugger/SkDrawCommand.cpp
diff --git a/tools/debugger/SkDrawCommand.cpp b/tools/debugger/SkDrawCommand.cpp
index 6c9287fa31d8c711948fd77a72aeb7bed721f6a6..7f5db7531a2d42584152ece176208d0cf3c66645 100644
--- a/tools/debugger/SkDrawCommand.cpp
+++ b/tools/debugger/SkDrawCommand.cpp
@@ -28,6 +28,7 @@
 #define SKDEBUGCANVAS_ATTRIBUTE_COMMAND           "command"
 #define SKDEBUGCANVAS_ATTRIBUTE_VISIBLE           "visible"
 #define SKDEBUGCANVAS_ATTRIBUTE_MATRIX            "matrix"
+#define SKDEBUGCANVAS_ATTRIBUTE_DRAWDEPTHTRANS    "drawDepthTranslation"
 #define SKDEBUGCANVAS_ATTRIBUTE_COORDS            "coords"
 #define SKDEBUGCANVAS_ATTRIBUTE_BOUNDS            "bounds"
 #define SKDEBUGCANVAS_ATTRIBUTE_PAINT             "paint"
@@ -210,6 +211,7 @@ const char* SkDrawCommand::GetCommandString(OpType type) {
         case kSave_OpType: return "Save";
         case kSaveLayer_OpType: return "SaveLayer";
         case kSetMatrix_OpType: return "SetMatrix";
+        case kTranslateZ_OpType: return "TranslateZ";
         default:
             SkDebugf("OpType error 0x%08x\n", type);
             SkASSERT(0);
@@ -266,6 +268,8 @@ SkDrawCommand* SkDrawCommand::fromJSON(Json::Value& command, UrlDataManager& url
         INSTALL_FACTORY(Save);
         INSTALL_FACTORY(SaveLayer);
         INSTALL_FACTORY(SetMatrix);
+
+        INSTALL_FACTORY(TranslateZ);
     }
     SkString name = SkString(command[SKDEBUGCANVAS_ATTRIBUTE_COMMAND].asCString());
     FROM_JSON* factory = factories.find(name);
@@ -468,6 +472,11 @@ Json::Value SkDrawCommand::MakeJsonMatrix(const SkMatrix& matrix) {
     return result;
 }
 
+Json::Value SkDrawCommand::MakeJsonScalar(SkScalar z) {
+    Json::Value result(z);
+    return result;
+}
+
 Json::Value SkDrawCommand::MakeJsonPath(const SkPath& path) {
     Json::Value result(Json::objectValue);
     switch (path.getFillType()) {
@@ -1480,6 +1489,11 @@ static void extract_json_matrix(Json::Value& matrix, SkMatrix* result) {
     result->set9(values);
 }
 
+static void extract_json_scalar(Json::Value& scalar, SkScalar* result) {
+    SkScalar value = scalar.asFloat();
+    *result = value;
+}
+
 static void extract_json_path(Json::Value& path, SkPath* result) {
     const char* fillType = path[SKDEBUGCANVAS_ATTRIBUTE_FILLTYPE].asCString();
     if (!strcmp(fillType, SKDEBUGCANVAS_FILLTYPE_WINDING)) {
@@ -3224,3 +3238,26 @@ SkSetMatrixCommand* SkSetMatrixCommand::fromJSON(Json::Value& command,
     extract_json_matrix(command[SKDEBUGCANVAS_ATTRIBUTE_MATRIX], &matrix);
     return new SkSetMatrixCommand(matrix);
 }
+
+SkTranslateZCommand::SkTranslateZCommand(SkScalar z)
+    : INHERITED(kTranslateZ_OpType) {
+    fZTranslate = z;
+    fInfo.push(SkObjectParser::ScalarToString(fZTranslate, "drawDepthTranslation"));
+}
+
+void SkTranslateZCommand::execute(SkCanvas* canvas) const {
+    canvas->translateZ(fZTranslate);
+}
+
+Json::Value SkTranslateZCommand::toJSON(UrlDataManager& urlDataManager) const {
+    Json::Value result = INHERITED::toJSON(urlDataManager);
+    result[SKDEBUGCANVAS_ATTRIBUTE_DRAWDEPTHTRANS] = MakeJsonScalar(fZTranslate);
+    return result;
+}
+
+SkTranslateZCommand* SkTranslateZCommand::fromJSON(Json::Value& command,
+                                       UrlDataManager& urlDataManager) {
+    SkScalar z;
+    extract_json_scalar(command[SKDEBUGCANVAS_ATTRIBUTE_DRAWDEPTHTRANS], &z);
+    return new SkTranslateZCommand(z);
+}