Add batch names and bounds to json debug information

include/private/GrAuditTrail.h

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrAuditTrail_DEFINED
 #define GrAuditTrail_DEFINED
 
 #include "GrConfig.h"
+#include "SkRect.h"
 #include "SkString.h"
 #include "SkTArray.h"
 
 /*
  * GrAuditTrail collects a list of draw ops, detailed information about those ops, and can dump them
  * to json.
  */
 class GrAuditTrail {
 public:
-    void addOp(SkString name) {
+    void addOp(const SkString& name) {
         SkASSERT(GR_BATCH_DEBUGGING_OUTPUT);
         fOps.push_back().fName = name;
     }
 
+    void addBatch(const SkString& name, const SkRect& bounds) {
+        SkASSERT(GR_BATCH_DEBUGGING_OUTPUT);
+        Op::Batch& batch = fOps.back().fBatches.push_back();
+        batch.fName = name;
+        batch.fBounds = bounds;
+    }
+
     SkString toJson() const;
 
     void reset() { SkASSERT(GR_BATCH_DEBUGGING_OUTPUT); fOps.reset(); }
 
 private:
     struct Op {
         SkString toJson() const;
+        struct Batch {
+            SkString toJson() const;
+            SkString fName;
+            SkRect fBounds;
+        };
+
         SkString fName;
+        SkTArray<Batch> fBatches;
     };
 
     SkTArray<Op> fOps;
 };
 
 #define GR_AUDIT_TRAIL_INVOKE_GUARD(invoke, ...) \
     if (GR_BATCH_DEBUGGING_OUTPUT) {             \
         invoke(__VA_ARGS__);                     \
     }
 
-
 #define GR_AUDIT_TRAIL_ADDOP(audit_trail, opname) \
     GR_AUDIT_TRAIL_INVOKE_GUARD(audit_trail->addOp, opname);
 
 #define GR_AUDIT_TRAIL_RESET(audit_trail) \
     GR_AUDIT_TRAIL_INVOKE_GUARD(audit_trail->reset);
 
+#define GR_AUDIT_TRAIL_ADDBATCH(audit_trail, batchname, bounds) \
+    GR_AUDIT_TRAIL_INVOKE_GUARD(audit_trail->addBatch, SkString(batchname), bounds);
+
 #endif