Remove canApplyCoverage from XP and all related functions in gpu code.

src/gpu/GrContext.cpp

Index: src/gpu/GrContext.cpp
diff --git a/src/gpu/GrContext.cpp b/src/gpu/GrContext.cpp
index 7a910c5744662626cc0b0f7eed5eb0aa44468cbe..4c3e236818de9ce619539e903f2e89a07fb046b5 100755
--- a/src/gpu/GrContext.cpp
+++ b/src/gpu/GrContext.cpp
@@ -486,14 +486,6 @@ static bool apply_aa_to_rect(GrDrawTarget* target,
                              SkScalar strokeWidth,
                              const SkMatrix& combinedMatrix,
                              GrColor color) {
-    if (!pipelineBuilder->canTweakAlphaForCoverage() &&
-        !pipelineBuilder->canUseFracCoveragePrimProc(color, *target->caps())) {
-#ifdef SK_DEBUG
-        //SkDebugf("Turning off AA to correctly apply blend.\n");
-#endif
-        return false;
-    }
-
     if (pipelineBuilder->getRenderTarget()->isMultisampled()) {
         return false;
     }
@@ -889,11 +881,6 @@ static bool is_nested_rects(GrDrawTarget* target,
         return false;
     }
 
-    if (!pipelineBuilder->canTweakAlphaForCoverage() &&
-        !pipelineBuilder->canUseFracCoveragePrimProc(color, *target->caps())) {
-        return false;
-    }
-
     SkPath::Direction dirs[2];
     if (!path.isNestedRects(rects, dirs)) {
         return false;
@@ -1027,8 +1014,7 @@ void GrContext::internalDrawPath(GrDrawTarget* target,
     // aa. If we have some future driver-mojo path AA that can do the right
     // thing WRT to the blend then we'll need some query on the PR.
     bool useCoverageAA = useAA &&
-        !pipelineBuilder->getRenderTarget()->isMultisampled() &&
-        pipelineBuilder->canUseFracCoveragePrimProc(color, *target->caps());
+        !pipelineBuilder->getRenderTarget()->isMultisampled();
 
 
     GrPathRendererChain::DrawType type =