Lazy init batch unique ID

src/gpu/batches/GrBatch.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrBatch.h"
 
 #include "GrMemoryPool.h"
@@ skipping 18 matching lines @@
 
     GrMemoryPool* pool() const {
         static GrMemoryPool gPool(16384, 16384);
         return &gPool;
     }
 };
 }
 
 int32_t GrBatch::gCurrBatchClassID = GrBatch::kIllegalBatchID;
 
-GrBATCH_SPEW(int32_t GrBatch::gCurrBatchUniqueID = GrBatch::kIllegalBatchID;)
+int32_t GrBatch::gCurrBatchUniqueID = GrBatch::kIllegalBatchID;
 
 void* GrBatch::operator new(size_t size) {
     return MemoryPoolAccessor().pool()->allocate(size);
 }
 
 void GrBatch::operator delete(void* target) {
     return MemoryPoolAccessor().pool()->release(target);
 }
 
 GrBatch::GrBatch(uint32_t classID)
     : fClassID(classID)
-#if GR_BATCH_SPEW
-    , fUniqueID(GenBatchID())
-#endif
-{
+    , fUniqueID(kIllegalBatchID) {
     SkDEBUGCODE(fUsed = false;)
 }
 
 GrBatch::~GrBatch() {}