Add batch information to json

src/gpu/GrAuditTrail.cpp

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrAuditTrail.h"
 
 void GrAuditTrail::JsonifyTArray(SkString* json, const char* name, const FrameArray& array) {
@@ skipping 69 matching lines @@
     int fTabCount;
     bool fFreshLine;
     bool fCommaException;
 };
 
 static SkString pretty_print_json(SkString json) {
     class PrettyPrintJson prettyPrintJson;
     return prettyPrintJson.prettify(json);
 }
 
-SkString GrAuditTrail::toJson() const {
+SkString GrAuditTrail::toJson(bool prettyPrint) const {
     SkString json;
     json.append("{");
     JsonifyTArray(&json, "Stacks", fFrames);
     json.append("}");
 
-    // TODO if this becomes a performance issue we should make pretty print configurable
-    return pretty_print_json(json);
+    if (prettyPrint) {
+        return pretty_print_json(json);
+    } else {
+        return json;
+    }
 }
 
 SkString GrAuditTrail::Frame::toJson() const {
     SkString json;
     json.append("{");
     json.appendf("\"Name\": \"%s\",", fName);
     JsonifyTArray(&json, "Frames", fChildren);
     json.append("}");
     return json;
 }
 
 SkString GrAuditTrail::Batch::toJson() const {
     SkString json;
     json.append("{");
     json.appendf("\"Name\": \"%s\",", fName);
     json.append("\"Bounds\": {");
     json.appendf("\"Left\": %f,", fBounds.fLeft);
     json.appendf("\"Right\": %f,", fBounds.fRight);
     json.appendf("\"Top\": %f,", fBounds.fTop);
     json.appendf("\"Bottom\": %f", fBounds.fBottom);
     json.append("}");
     json.append("}");
     return json;
 }