Update XPF invariant info to not account for conflation

Renames getInvariantOutput to getInvariantBlendedColor on GrXPFactory
and redefines it to not account for coverage conflation. This is the
information that all the callsites actually wanted to know.

BUG=skia:

Review URL: https://codereview.chromium.org/1161273005

1 files changed, 2 insertions, 2 deletions

diff --git a/src/gpu/GrDrawTarget.h b/src/gpu/GrDrawTarget.h
index c1eca9a81e..30a6cee4fa 100644
--- a/src/gpu/GrDrawTarget.h
+++ b/src/gpu/GrDrawTarget.h
@@ -229,8 +229,8 @@ protected:
                      const GrBatch* batch, const SkRect* devBounds,
                      GrDrawTarget* target);
 
-        bool willBlendWithDst(const GrPrimitiveProcessor* primProc) const {
-            return fPipelineBuilder->willBlendWithDst(primProc);
+        bool willColorBlendWithDst(const GrPrimitiveProcessor* primProc) const {
+            return fPipelineBuilder->willColorBlendWithDst(primProc);
         }
     private:
         friend class GrDrawTarget;