Disable flaky LayerTreeHostTestSurfaceDamage test case.

LayerTreeHostTestSurfaceDamage.RunSingleThread_DelegatingRenderer is
flaky and causing a lot of CQ runs to fail.

TBR=ajuma@chromium.org

Bug: 1014263
Change-Id: I229b53eceb6b239cce5d1615780b98c78833af98
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1860113Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#705712}

cc/trees/layer_tree_host_unittest.cc

@@ -1158,7 +1158,8 @@ class LayerTreeHostTestSurfaceDamage : public LayerTreeHostTest {
   scoped_refptr<Layer> grand_child_;
 };
 
-SINGLE_AND_MULTI_THREAD_TEST_F(LayerTreeHostTestSurfaceDamage);
+// TODO(crbug.com/1014263): Disable because this test is flaky.
+// SINGLE_AND_MULTI_THREAD_TEST_F(LayerTreeHostTestSurfaceDamage);
 
 class LayerTreeHostTestLayerListSurfaceDamage : public LayerTreeHostTest {
  protected: