Check for xfer barriers in GrBatch, auto-issue barriers in GrGpu

src/gpu/batches/GrAAStrokeRectBatch.cpp

Index: src/gpu/batches/GrAAStrokeRectBatch.cpp
diff --git a/src/gpu/batches/GrAAStrokeRectBatch.cpp b/src/gpu/batches/GrAAStrokeRectBatch.cpp
index fa88fd13df6ca7134bb66726318d8fd1bb648ce4..0083aaad6c7a13ca90155bf50ed8b10084bf4227 100644
--- a/src/gpu/batches/GrAAStrokeRectBatch.cpp
+++ b/src/gpu/batches/GrAAStrokeRectBatch.cpp
@@ -203,8 +203,9 @@ const GrIndexBuffer* GrAAStrokeRectBatch::GetIndexBuffer(GrResourceProvider* res
     }
 }
 
-bool GrAAStrokeRectBatch::onCombineIfPossible(GrBatch* t) {
-    if (!this->pipeline()->isEqual(*t->pipeline())) {
+bool GrAAStrokeRectBatch::onCombineIfPossible(GrBatch* t, const GrCaps& caps) {
+    if (!GrPipeline::CanCombine(*this->pipeline(), this->bounds(), *t->pipeline(), t->bounds(),
+                                caps)) {
         return false;
     }