Revert "Improve GrPathRendererChain heuristics"

This reverts commit 60f42494f5d45c38e260ce089cdddfb600f799b2.

Reason for revert: breaking gold

Original change's description:
> Improve GrPathRendererChain heuristics
> 
> Changes GrPathRenderer::canDrawPath to return a 'CanDrawPath' enum,
> which contains a new kAsBackup value that means "I'm better than SW,
> but give the path renderers below me a chance first."
> 
> Bug: skia:
> Change-Id: I45aac5462ca1bc0bc839eb1c315db9493901a07e
> Reviewed-on: https://skia-review.googlesource.com/42222
> Reviewed-by: Brian Osman <brianosman@google.com>
> Reviewed-by: Brian Salomon <bsalomon@google.com>
> Commit-Queue: Chris Dalton <csmartdalton@google.com>

TBR=jvanverth@google.com,bsalomon@google.com,brianosman@google.com,csmartdalton@google.com,senorblanco@google.com

Change-Id: I46020dbd56b6f6b88668894285b9b7b80f89b9a2
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/43780
Reviewed-by: Chris Dalton <csmartdalton@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>

1 files changed, 3 insertions, 6 deletions

diff --git a/src/gpu/ops/GrMSAAPathRenderer.cpp b/src/gpu/ops/GrMSAAPathRenderer.cpp
index b80a811430..ef19367f61 100644
--- a/src/gpu/ops/GrMSAAPathRenderer.cpp
+++ b/src/gpu/ops/GrMSAAPathRenderer.cpp
@@ -682,18 +682,15 @@ bool GrMSAAPathRenderer::internalDrawPath(GrRenderTargetContext* renderTargetCon
     return true;
 }
 
-GrPathRenderer::CanDrawPath GrMSAAPathRenderer::onCanDrawPath(const CanDrawPathArgs& args) const {
+bool GrMSAAPathRenderer::onCanDrawPath(const CanDrawPathArgs& args) const {
     // If we aren't a single_pass_shape, we require stencil buffers.
     if (!single_pass_shape(*args.fShape) && args.fCaps->avoidStencilBuffers()) {
-        return CanDrawPath::kNo;
+        return false;
     }
     // This path renderer only fills and relies on MSAA for antialiasing. Stroked shapes are
     // handled by passing on the original shape and letting the caller compute the stroked shape
     // which will have a fill style.
-    if (!args.fShape->style().isSimpleFill() || GrAAType::kCoverage == args.fAAType) {
-        return CanDrawPath::kNo;
-    }
-    return CanDrawPath::kYes;
+    return args.fShape->style().isSimpleFill() && (GrAAType::kCoverage != args.fAAType);
 }
 
 bool GrMSAAPathRenderer::onDrawPath(const DrawPathArgs& args) {