fix for msan

src/gpu/GrBatchTarget.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrBatchBuffer_DEFINED
 #define GrBatchBuffer_DEFINED
 
+#include "GrBufferAllocPool.h"
 #include "GrPendingProgramElement.h"
 #include "GrPipeline.h"
 #include "GrGpu.h"
 #include "GrTRecorder.h"
 
 /*
  * GrBatch instances use this object to allocate space for their geometry and to issue the draws
  * that render their batch.
  */
 
@@ skipping 54 matching lines @@
         return &fFlushBuffer.back().fBatchTracker;
     }
 
     const GrDrawTargetCaps& caps() const { return *fGpu->caps(); }
 
     GrVertexBufferAllocPool* vertexPool() { return fVertexPool; }
     GrIndexBufferAllocPool* indexPool() { return fIndexPool; }
 
     const GrIndexBuffer* quadIndexBuffer() const { return fGpu->getQuadIndexBuffer(); }
 
+    // A helper for draws which overallocate and then return data to the pool
+    void putBackIndices(size_t indices) { fIndexPool->putBack(indices * sizeof(uint16_t)); }
+
+    void putBackVertices(size_t vertices, size_t vertexStride) {
+        fVertexPool->putBack(vertices * vertexStride);
+    }
+
 private:
     GrGpu* fGpu;
     GrVertexBufferAllocPool* fVertexPool;
     GrIndexBufferAllocPool* fIndexPool;
 
     typedef void* TBufferAlign; // This wouldn't be enough align if a command used long double.
 
     struct BufferedFlush {
         BufferedFlush(const GrPrimitiveProcessor* primProc, const GrPipeline* pipeline)
             : fPrimitiveProcessor(primProc)
@@ skipping 11 matching lines @@
 
     typedef GrTRecorder<BufferedFlush, TBufferAlign> FlushBuffer;
 
     FlushBuffer fFlushBuffer;
     // TODO this is temporary
     FlushBuffer::Iter fIter;
     int fNumberOfDraws;
 };
 
 #endif