Revert of Fix caching of sample locations

src/gpu/gl/GrGLGpu.h

Index: src/gpu/gl/GrGLGpu.h
diff --git a/src/gpu/gl/GrGLGpu.h b/src/gpu/gl/GrGLGpu.h
index 5cc0facea6c4154646e9047ef5160bf2d322869f..b7daa431d846360ce067de22a977d21931c5558b 100644
--- a/src/gpu/gl/GrGLGpu.h
+++ b/src/gpu/gl/GrGLGpu.h
@@ -220,8 +220,10 @@
                        const SkIRect& srcRect,
                        const SkIPoint& dstPoint) override;
 
-    void onGetMultisampleSpecs(GrRenderTarget*, const GrStencilSettings&,
-                               int* effectiveSampleCnt, SamplePattern*) override;
+    void onGetMultisampleSpecs(GrRenderTarget*,
+                               const GrStencilSettings&,
+                               int* effectiveSampleCnt,
+                               SkAutoTDeleteArray<SkPoint>* sampleLocations) override;
 
     // binds texture unit in GL
     void setTextureUnit(int unitIdx);