diff --git a/cc/trees/layer_tree_host_pixeltest_scrollbars.cc b/cc/trees/layer_tree_host_pixeltest_scrollbars.cc
index b251df562abd02..f218c5a49eeb63 100644
--- a/cc/trees/layer_tree_host_pixeltest_scrollbars.cc
+++ b/cc/trees/layer_tree_host_pixeltest_scrollbars.cc
@@ -137,7 +137,13 @@ TEST_F(LayerTreeHostScrollbarsPixelTest, TransformScale) {
                base::FilePath(FILE_PATH_LITERAL("spiral_double_scale.png")));
 }
 
-TEST_F(LayerTreeHostScrollbarsPixelTest, HugeTransformScale) {
+// Disabled on TSan due to frequent timeouts. crbug.com/848994
+#if defined(THREAD_SANITIZER)
+#define MAYBE_HugeTransformScale DISABLED_HugeTransformScale
+#else
+#define MAYBE_HugeTransformScale HugeTransformScale
+#endif
+TEST_F(LayerTreeHostScrollbarsPixelTest, MAYBE_HugeTransformScale) {
   scoped_refptr<SolidColorLayer> background =
       CreateSolidColorLayer(gfx::Rect(400, 400), SK_ColorWHITE);