Disable flat interpolation in TextureOp on Qualcomm

Change-Id: I335fa9731cbf449989242f7e81096248abc90e90
Reviewed-on: https://skia-review.googlesource.com/46980
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
diff --git a/src/gpu/ops/GrTextureOp.cpp b/src/gpu/ops/GrTextureOp.cpp
index 1149ed2..e03d98a 100644
--- a/src/gpu/ops/GrTextureOp.cpp
+++ b/src/gpu/ops/GrTextureOp.cpp
@@ -108,7 +108,7 @@
                                      gpArgs->fPositionVar,
                                      textureGP.fTextureCoords.fName,
                                      args.fFPCoordTransformHandler);
-                if (args.fShaderCaps->flatInterpolationSupport()) {
+                if (args.fShaderCaps->preferFlatInterpolation()) {
                     args.fVaryingHandler->addFlatPassThroughAttribute(&textureGP.fColors,
                                                                       args.fOutputColor);
                 } else {