Revert "Revert of Move copy-surface-as-draw fallback to GrGLGpu. (patchset #12 id:220001 of https:/…

src/gpu/gl/builders/GrGLProgramBuilder.cpp

Index: src/gpu/gl/builders/GrGLProgramBuilder.cpp
diff --git a/src/gpu/gl/builders/GrGLProgramBuilder.cpp b/src/gpu/gl/builders/GrGLProgramBuilder.cpp
index a3b0d686a4a8bba18ee297c00b99180110db8e44..1478279fe26afd6ca30a69ba0060fe3d6f49d6fd 100644
--- a/src/gpu/gl/builders/GrGLProgramBuilder.cpp
+++ b/src/gpu/gl/builders/GrGLProgramBuilder.cpp
@@ -343,8 +343,7 @@ void GrGLProgramBuilder::emitAndInstallXferProc(const GrXferProcessor& xp,
         fFS.enableSecondaryOutput();
     }
 
-    // On any post 1.10 GLSL supporting GPU, we declare custom output
-    if (k110_GrGLSLGeneration != fFS.fProgramBuilder->gpu()->glslGeneration()) {
+    if (this->ctxInfo().caps()->glslCaps()->mustDeclareFragmentShaderOutput()) {
         fFS.enableCustomOutput();
     }