Isolate GrBufferAllocPools inside GrBatchTarget

src/gpu/GrBatch.cpp

Index: src/gpu/GrBatch.cpp
diff --git a/src/gpu/GrBatch.cpp b/src/gpu/GrBatch.cpp
index 7d1c0ae25fb1c14b7a623187a56cc8a38301c69a..0655a4cd9db6f63e6ad7abc5134c8e56d2ece1f6 100644
--- a/src/gpu/GrBatch.cpp
+++ b/src/gpu/GrBatch.cpp
@@ -58,8 +58,8 @@ void* GrBatch::InstancedHelper::init(GrBatchTarget* batchTarget, GrPrimitiveType
     const GrVertexBuffer* vertexBuffer;
     int firstVertex;
     int vertexCount = verticesPerInstance * instancesToDraw;
-    void* vertices = batchTarget->vertexPool()->makeSpace(vertexStride, vertexCount, &vertexBuffer,
-                                                          &firstVertex);
+    void* vertices = batchTarget->makeVertSpace(vertexStride, vertexCount,
+                                                &vertexBuffer, &firstVertex);
     if (!vertices) {
         SkDebugf("Vertices could not be allocated for instanced rendering.");
         return NULL;