Revert "Revert "Revert "Revert "Revert "Redefine the meaning of sample counts in GPU backend."""""

This reverts commit 5bb82cbecd740d21b92e8d2944280ab6eb6af7a6.

Reason for revert: <INSERT REASONING HERE>

Original change's description:
> Revert "Revert "Revert "Revert "Redefine the meaning of sample counts in GPU backend.""""
> 
> This reverts commit 18c52a7b52211de5d0dcd86dc048adef758c6c75.
> 
> Also relands "More sample count cleanup:" and "Add new GrContext queries for imagability, surfacability, and max sample count of color types"
> 
> 
> Bug: skia:
> Change-Id: I4028105a3a1f16ce3944e134619eb6245af6b947
> Reviewed-on: https://skia-review.googlesource.com/102940
> Reviewed-by: Brian Salomon <bsalomon@google.com>
> Commit-Queue: Brian Salomon <bsalomon@google.com>

TBR=egdaniel@google.com,bsalomon@google.com

Change-Id: Idee23be2f1719f0bdc9305043e95a2d589bee8d1
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/103220
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>

1 files changed, 5 insertions, 6 deletions

diff --git a/include/gpu/GrRenderTarget.h b/include/gpu/GrRenderTarget.h
index 0aad636a69..4eee7f63ce 100644
--- a/include/gpu/GrRenderTarget.h
+++ b/include/gpu/GrRenderTarget.h
@@ -33,11 +33,10 @@ public:
     const GrRenderTarget* asRenderTarget() const  override { return this; }
 
     // GrRenderTarget
-    bool isStencilBufferMultisampled() const { return fSampleCnt > 1; }
+    bool isStencilBufferMultisampled() const { return fSampleCnt > 0; }
 
     GrFSAAType fsaaType() const {
-        SkASSERT(fSampleCnt >= 1);
-        if (fSampleCnt <= 1) {
+        if (!fSampleCnt) {
             SkASSERT(!(fFlags & GrRenderTargetFlags::kMixedSampled));
             return GrFSAAType::kNone;
         }
@@ -46,15 +45,15 @@ public:
     }
 
     /**
-     * Returns the number of samples/pixel in the stencil buffer (One if non-MSAA).
+     * Returns the number of samples/pixel in the stencil buffer (Zero if non-MSAA).
      */
     int numStencilSamples() const { return fSampleCnt; }
 
     /**
-     * Returns the number of samples/pixel in the color buffer (One if non-MSAA or mixed sampled).
+     * Returns the number of samples/pixel in the color buffer (Zero if non-MSAA or mixed sampled).
      */
     int numColorSamples() const {
-        return GrFSAAType::kMixedSamples == this->fsaaType() ? 1 : fSampleCnt;
+        return GrFSAAType::kMixedSamples == this->fsaaType() ? 0 : fSampleCnt;
     }
 
     /**