Fix instances where hwaa was wrong for mixed samples

src/gpu/batches/GrStencilAndCoverPathRenderer.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "GrStencilAndCoverPathRenderer.h"
 #include "GrCaps.h"
@@ skipping 51 matching lines @@
         }
     } else {
         SkASSERT(path->isEqualTo(skPath, style));
     }
     return path.release();
 }
 
 void GrStencilAndCoverPathRenderer::onStencilPath(const StencilPathArgs& args) {
     GR_AUDIT_TRAIL_AUTO_FRAME(args.fDrawContext->auditTrail(),
                               "GrStencilAndCoverPathRenderer::onStencilPath");
+    SkASSERT(!args.fIsAA || args.fDrawContext->isStencilBufferMultisampled());
 
     GrPaint paint;
     SkSafeUnref(paint.setXPFactory(GrDisableColorXPFactory::Create()));
     paint.setAntiAlias(args.fIsAA);
 
-    const GrPipelineBuilder pipelineBuilder(paint, args.fDrawContext->isUnifiedMultisampled());
+    GrPipelineBuilder pipelineBuilder(paint, args.fDrawContext->isUnifiedMultisampled());
+    pipelineBuilder.setState(GrPipelineBuilder::kHWAntialias_Flag, args.fIsAA);
 
     SkASSERT(!args.fPath->isInverseFillType());
     SkAutoTUnref<GrPath> path(get_gr_path(fResourceProvider, *args.fPath, GrStyle::SimpleFill()));
     args.fDrawContext->drawContextPriv().stencilPath(pipelineBuilder,
                                                      *args.fClip,
                                                      *args.fViewMatrix,
                                                      path,
                                                      path->getFillType());
 }
 
@@ skipping 92 matching lines @@
         if (args.fAntiAlias) {
             SkASSERT(args.fDrawContext->isStencilBufferMultisampled());
             pipelineBuilder.enableState(GrPipelineBuilder::kHWAntialias_Flag);
         }
 
         args.fDrawContext->drawBatch(pipelineBuilder, *args.fClip, batch);
     }
 
     return true;
 }