OptState owns program descriptor

src/gpu/GrGpu.h

Index: src/gpu/GrGpu.h
diff --git a/src/gpu/GrGpu.h b/src/gpu/GrGpu.h
index e4669a25c506fa30baee1349a9d86b1822186ce8..847a95d4f9062fff1e08de8f1ea3ccaa8d6883d4 100644
--- a/src/gpu/GrGpu.h
+++ b/src/gpu/GrGpu.h
@@ -19,6 +19,7 @@ class GrPath;
 class GrPathRange;
 class GrPathRenderer;
 class GrPathRendererChain;
+class GrProgramDesc;
 class GrStencilBuffer;
 class GrVertexBufferAllocPool;
 
@@ -348,6 +349,11 @@ public:
 
     GrContext::GPUStats* gpuStats() { return &fGPUStats; }
 
+    virtual void buildKey(const GrOptDrawState* optState,
+                          GrGpu::DrawType drawType,
+                          const GrDeviceCoordTexture* dstCopy,
+                          GrProgramDesc* desc) = 0;
+
 protected:
     DrawType PrimTypeToDrawType(GrPrimitiveType type) {
         switch (type) {