Reland "Disable the MSAA atlas mode for CCPR"

This is a reland of 97c476ecb7

Original change's description:
> Disable the MSAA atlas mode for CCPR
>
> We have a long term path rendering plan that uses dynamic MSAA instead.
> This CL is a test to see if we can drop support for CCPR now.
>
> Change-Id: I1bff3ca3143a6b453b65a7932a1805c195922805
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/354036
> Reviewed-by: Brian Salomon <bsalomon@google.com>
> Commit-Queue: Chris Dalton <csmartdalton@google.com>

Change-Id: Ied3390d7df0b01d5e9d565247f5aed0addb5ab8f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/356336
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>

src/gpu/ccpr/GrCoverageCountingPathRenderer.cpp

@@ -38,6 +38,7 @@ bool GrCoverageCountingPathRenderer::IsSupported(const GrCaps& caps, CoverageTyp
         return true;
     }
 
+#if 0
     if (!caps.driverDisableMSAACCPR() &&
         caps.internalMultisampleCount(defaultA8Format) > 1 &&
         caps.sampleLocationsSupport() &&
@@ -47,6 +48,7 @@ bool GrCoverageCountingPathRenderer::IsSupported(const GrCaps& caps, CoverageTyp
         }
         return true;
     }
+#endif
 
     return false;
 }

tests/GrCCPRTest.cpp

@@ -63,9 +63,11 @@ public:
                       fDContext.get(), GrColorType::kRGBA_8888, nullptr, SkBackingFit::kExact,
                       {kCanvasSize, kCanvasSize}))
             , fDoStroke(DoStroke::kYes == doStroke) {
+#if 0
         if (!fCCPR) {
             ERRORF(reporter, "ccpr not enabled in GrDirectContext for ccpr tests");
         }
+#endif
         if (!fRTC) {
             ERRORF(reporter, "failed to create GrSurfaceDrawContext for ccpr tests");
         }