Revert of Move config texturability/renderability to config table (patchset #8 id:140001 of https://codereview.chromium.org/1563443002/ )

Reason for revert:
speculative revert for breaking iOS writePixels tests

Original issue's description:
> Move config texturability/renderability to config table.
>
> GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1563443002
>
> Committed: https://skia.googlesource.com/skia/+/32a3cd2f2860b15a842a6aa49e4e6a3bed04f949

TBR=jvanverth@google.com,bsalomon@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1569103003

1 files changed, 13 insertions, 2 deletions

diff --git a/include/gpu/GrCaps.h b/include/gpu/GrCaps.h
index 217a446264..3a6d27ba66 100644
--- a/include/gpu/GrCaps.h
+++ b/include/gpu/GrCaps.h
@@ -194,8 +194,15 @@ public:
     // Will be 0 if MSAA is not supported
     int maxSampleCount() const { return fMaxSampleCount; }
 
-    virtual bool isConfigTexturable(GrPixelConfig config) const = 0;
-    virtual bool isConfigRenderable(GrPixelConfig config, bool withMSAA) const = 0;
+    bool isConfigRenderable(GrPixelConfig config, bool withMSAA) const {
+        SkASSERT(kGrPixelConfigCnt > config);
+        return fConfigRenderSupport[config][withMSAA];
+    }
+
+    bool isConfigTexturable(GrPixelConfig config) const {
+        SkASSERT(kGrPixelConfigCnt > config);
+        return fConfigTextureSupport[config];
+    }
 
     bool suppressPrints() const { return fSuppressPrints; }
 
@@ -263,6 +270,10 @@ protected:
     int fMaxTileSize;
     int fMaxSampleCount;
 
+    // The first entry for each config is without msaa and the second is with.
+    bool fConfigRenderSupport[kGrPixelConfigCnt][2];
+    bool fConfigTextureSupport[kGrPixelConfigCnt];
+
 private:
     virtual void onApplyOptionsOverrides(const GrContextOptions&) {};