Update how we send draws to gpu backend to reduce state setting.

src/gpu/GrBatchFlushState.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
 
@@ skipping 143 matching lines @@
     GrBatchFlushState*  fState;
     GrDrawBatch*        fBatch;
 };
 
 /** Extension of GrDrawBatch::Target for use by GrVertexBatch. Adds the ability to create vertex
     draws. */
 class GrVertexBatch::Target : public GrDrawBatch::Target {
 public:
     Target(GrBatchFlushState* state, GrVertexBatch* batch) : INHERITED(state, batch) {}
 
-    void initDraw(const GrPrimitiveProcessor* primProc, const GrPipeline* pipeline) {
+    void initDraw(const GrPrimitiveProcessor* primProc, GrPrimitiveType primitiveType) {
         GrVertexBatch::DrawArray* draws = this->vertexBatch()->fDrawArrays.addToTail();
         draws->fPrimitiveProcessor.reset(primProc);
+        draws->fPrimitiveType = primitiveType;
         this->state()->advanceToken();
     }
 
     void draw(const GrVertices& vertices) {
         this->vertexBatch()->fDrawArrays.tail()->fDraws.push_back(vertices);
     }
 
     void* makeVertexSpace(size_t vertexSize, int vertexCount,
                           const GrVertexBuffer** buffer, int* startVertex) {
         return this->state()->makeVertexSpace(vertexSize, vertexCount, buffer, startVertex);
     }
 
     uint16_t* makeIndexSpace(int indexCount, const GrIndexBuffer** buffer, int* startIndex) {
         return this->state()->makeIndexSpace(indexCount, buffer, startIndex);
     }
 
     /** Helpers for batches which over-allocate and then return data to the pool. */
     void putBackIndices(int indices) { this->state()->putBackIndices(indices); }
     void putBackVertices(int vertices, size_t vertexStride) {
         this->state()->putBackVertexSpace(vertices * vertexStride);
     }
 
 private:
     GrVertexBatch* vertexBatch() { return static_cast<GrVertexBatch*>(this->batch()); }
     typedef GrDrawBatch::Target INHERITED;
 };
 
 #endif