cc: turn on distance field text on animated layers

cc/resources/gpu_raster_worker_pool.cc

Index: cc/resources/gpu_raster_worker_pool.cc
diff --git a/cc/resources/gpu_raster_worker_pool.cc b/cc/resources/gpu_raster_worker_pool.cc
index 2d1e888a6388f67fd48aff1548ae4cbe6e4f5873..93d3bae1bb4a62642847c1a225715c8759cc85c7 100644
--- a/cc/resources/gpu_raster_worker_pool.cc
+++ b/cc/resources/gpu_raster_worker_pool.cc
@@ -39,6 +39,10 @@ class RasterBufferImpl : public RasterBuffer {
     if (!lock_.sk_surface())
       return;
 
+    // Turn on distance fields for layers that have ever animated.
+    bool use_distance_field_text = picture_pile->has_transform_animated();
+    lock_.SetUseDistanceFieldText(use_distance_field_text);
+
     SkPictureRecorder recorder;
     gfx::Size size = resource_->size();
     skia::RefPtr<SkCanvas> canvas =