Add flag to enable rendering of text using signed distance fields.

cc/layers/tiled_layer_unittest.cc

Index: cc/layers/tiled_layer_unittest.cc
diff --git a/cc/layers/tiled_layer_unittest.cc b/cc/layers/tiled_layer_unittest.cc
index 35450b95e61dd1de86de9876969ac4fa94672e9e..bc83743b7040521e3a28d161c965263485941925 100644
--- a/cc/layers/tiled_layer_unittest.cc
+++ b/cc/layers/tiled_layer_unittest.cc
@@ -122,7 +122,8 @@ class TiledLayerTest : public testing::Test {
     DebugScopedSetImplThreadAndMainThreadBlocked
         impl_thread_and_main_thread_blocked(proxy_);
     resource_provider_ = ResourceProvider::Create(
-        output_surface_.get(), shared_bitmap_manager_.get(), 0, false, 1);
+        output_surface_.get(), shared_bitmap_manager_.get(), 0, false, 1,
+        false);
     host_impl_ = make_scoped_ptr(
         new FakeLayerTreeHostImpl(proxy_, shared_bitmap_manager_.get()));
   }