Fix for copy surface not handling dirty context

src/gpu/gl/GrGLGpu.cpp

Index: src/gpu/gl/GrGLGpu.cpp
diff --git a/src/gpu/gl/GrGLGpu.cpp b/src/gpu/gl/GrGLGpu.cpp
index e48ddf26ffe5869275d38d55fde01c2ff6644db8..9cc699cecf26ac6517cde10c779a932a722cdbff 100644
--- a/src/gpu/gl/GrGLGpu.cpp
+++ b/src/gpu/gl/GrGLGpu.cpp
@@ -2766,10 +2766,10 @@ bool GrGLGpu::initCopySurfaceDstDesc(const GrSurface* src, GrSurfaceDesc* desc)
     return true;
 }
 
-bool GrGLGpu::copySurface(GrSurface* dst,
-                          GrSurface* src,
-                          const SkIRect& srcRect,
-                          const SkIPoint& dstPoint) {
+bool GrGLGpu::onCopySurface(GrSurface* dst,
+                            GrSurface* src,
+                            const SkIRect& srcRect,
+                            const SkIPoint& dstPoint) {
     if (src->asTexture() && dst->asRenderTarget()) {
         this->copySurfaceAsDraw(dst, src, srcRect, dstPoint);
         return true;