Implement support for mixed sampled render targets

src/gpu/GrClipMaskManager.cpp

Index: src/gpu/GrClipMaskManager.cpp
diff --git a/src/gpu/GrClipMaskManager.cpp b/src/gpu/GrClipMaskManager.cpp
index 9d79a6dc89cda3249e1035562fdd2054e2b2dd34..f5235709ff6b91090bdd9aa19b6c86daeeac03b5 100644
--- a/src/gpu/GrClipMaskManager.cpp
+++ b/src/gpu/GrClipMaskManager.cpp
@@ -306,7 +306,7 @@ bool GrClipMaskManager::setupClipping(GrPipelineBuilder* pipelineBuilder,
     }
 
     // If MSAA is enabled we can do everything in the stencil buffer.
-    if (0 == rt->numSamples() && requiresAA) {
+    if (0 == rt->numColorSamples() && requiresAA) {
         GrTexture* result = NULL;
 
         // The top-left of the mask corresponds to the top-left corner of the bounds.