cc: Move anti-aliasing decision to parent compositor.

cc/tiled_layer_impl.cc

Index: cc/tiled_layer_impl.cc
diff --git a/cc/tiled_layer_impl.cc b/cc/tiled_layer_impl.cc
index f76faad5fe5c042524ecd5e97ef2147a1698611e..404033013fd456e14e43ea1a3694f2537234a290 100644
--- a/cc/tiled_layer_impl.cc
+++ b/cc/tiled_layer_impl.cc
@@ -195,15 +195,10 @@ void TiledLayerImpl::appendQuads(QuadSink& quadSink, AppendQuadsData& appendQuad
             float tileHeight = static_cast<float>(m_tiler->tileSize().height());
             gfx::Size textureSize(tileWidth, tileHeight);
 
-            bool clipped = false;
-            gfx::QuadF visibleContentInTargetQuad = MathUtil::mapQuad(drawTransform(), gfx::QuadF(visibleContentRect()), clipped);
-            bool isAxisAlignedInTarget = !clipped && visibleContentInTargetQuad.IsRectilinear();
-            bool useAA = m_tiler->hasBorderTexels() && !isAxisAlignedInTarget;
-
-            bool leftEdgeAA = !i && useAA;
-            bool topEdgeAA = !j && useAA;
-            bool rightEdgeAA = i == m_tiler->numTilesX() - 1 && useAA;
-            bool bottomEdgeAA = j == m_tiler->numTilesY() - 1 && useAA;
+            bool leftEdgeAA = !i;
+            bool topEdgeAA = !j;
+            bool rightEdgeAA = i == m_tiler->numTilesX() - 1;
+            bool bottomEdgeAA = j == m_tiler->numTilesY() - 1;
 
             scoped_ptr<TileDrawQuad> quad = TileDrawQuad::Create();
             quad->SetNew(sharedQuadState, tileRect, tileOpaqueRect, tile->resourceId(), texCoordRect, textureSize, tile->contentsSwizzled(), leftEdgeAA, topEdgeAA, rightEdgeAA, bottomEdgeAA);