rename GrDrawTargetCaps to GrCaps

Review URL: https://codereview.chromium.org/1133123009
diff --git a/src/gpu/effects/GrSimpleTextureEffect.cpp b/src/gpu/effects/GrSimpleTextureEffect.cpp
index e729b1b..9a5b3a7 100644
--- a/src/gpu/effects/GrSimpleTextureEffect.cpp
+++ b/src/gpu/effects/GrSimpleTextureEffect.cpp
@@ -58,7 +58,7 @@
 
 GrFragmentProcessor* GrSimpleTextureEffect::TestCreate(SkRandom* random,
                                                        GrContext*,
-                                                       const GrDrawTargetCaps&,
+                                                       const GrCaps&,
                                                        GrTexture* textures[]) {
     int texIdx = random->nextBool() ? GrProcessorUnitTest::kSkiaPMTextureIdx :
                                       GrProcessorUnitTest::kAlphaTextureIdx;