Rename GrStencilBuffer to GrStencilAttachment

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 f6a48d7589869af0714572051c75f64ed0a8973c..1c73afb2bcdec01530c43e7241822329c1450ed5 100644
--- a/src/gpu/gl/GrGLGpu.h
+++ b/src/gpu/gl/GrGLGpu.h
@@ -14,7 +14,7 @@
 #include "GrGLPathRendering.h"
 #include "GrGLProgram.h"
 #include "GrGLRenderTarget.h"
-#include "GrGLStencilBuffer.h"
+#include "GrGLStencilAttachment.h"
 #include "GrGLTexture.h"
 #include "GrGLVertexArray.h"
 #include "GrGLVertexBuffer.h"
@@ -123,7 +123,7 @@ private:
     GrTexture* onWrapBackendTexture(const GrBackendTextureDesc&) override;
     GrRenderTarget* onWrapBackendRenderTarget(const GrBackendRenderTargetDesc&) override;
     bool createStencilBufferForRenderTarget(GrRenderTarget* rt, int width, int height) override;
-    bool attachStencilBufferToRenderTarget(GrStencilBuffer* sb, GrRenderTarget* rt) override;
+    bool attachStencilBufferToRenderTarget(GrStencilAttachment* sb, GrRenderTarget* rt) override;
 
     void onClear(GrRenderTarget*, const SkIRect* rect, GrColor color,
                  bool canIgnoreRect) override;