Setup CCPR testing with GrMockContext

Beefs up the mock context to be able to support CCPR, sets up a
framework for testing CCPR with the mock context, and adds a new test.

Bug: skia:
Change-Id: If95f92726f7b1a7f52ad04ca8126551f58ea8032
Reviewed-on: https://skia-review.googlesource.com/67980
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/gpu/GrPathRendererChain.cpp b/src/gpu/GrPathRendererChain.cpp
index 3bb744afab..393823ca1b 100644
--- a/src/gpu/GrPathRendererChain.cpp
+++ b/src/gpu/GrPathRendererChain.cpp
@@ -54,7 +54,8 @@ GrPathRendererChain::GrPathRendererChain(GrContext* context, const Options& opti
         bool drawCachablePaths = !options.fAllowPathMaskCaching;
         if (auto ccpr = GrCoverageCountingPathRenderer::CreateIfSupported(*context->caps(),
                                                                           drawCachablePaths)) {
-            context->contextPriv().addOnFlushCallbackObject(ccpr.get());
+            fCoverageCountingPathRenderer = ccpr.get();
+            context->contextPriv().addOnFlushCallbackObject(fCoverageCountingPathRenderer);
             fChain.push_back(std::move(ccpr));
         }
     }