Disable TextureLayerMailboxIsActivatedDuringCommit.* on windows

cc/layers/texture_layer_unittest.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/layers/texture_layer.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 825 matching lines @@
   }
 
   void AfterTest() override {}
 
   base::Lock activate_count_lock_;
   int activate_count_;
   scoped_refptr<Layer> root_;
   scoped_refptr<TextureLayer> layer_;
 };
 
+// Flaky on windows. https://crbug.com/641613
+#if !defined(OS_WIN)
 SINGLE_AND_MULTI_THREAD_TEST_F(TextureLayerMailboxIsActivatedDuringCommit);
+#endif
 
 class TextureLayerImplWithMailboxTest : public TextureLayerTest {
  protected:
   void SetUp() override {
     TextureLayerTest::SetUp();
     layer_tree_host_ =
         MockLayerTreeHost::Create(&fake_client_, &task_graph_runner_);
     layer_tree_ = layer_tree_host_->GetLayerTree();
     host_impl_.SetVisible(true);
     EXPECT_TRUE(host_impl_.InitializeRenderer(output_surface_.get()));
@@ skipping 592 matching lines @@
   base::ThreadChecker main_thread_;
   int callback_count_;
   scoped_refptr<Layer> root_;
   scoped_refptr<TextureLayer> layer_;
 };
 
 SINGLE_AND_MULTI_THREAD_TEST_F(TextureLayerWithMailboxImplThreadDeleted);
 
 }  // namespace
 }  // namespace cc