Fix wrong inclusion of .cc file in services/ui/ws/

services/ui/ws/frame_generator_unittest.cc

 // Copyright 2017 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 "services/ui/ws/frame_generator.h"
 
 #include "base/macros.h"
 #include "cc/output/compositor_frame_sink.h"
 #include "cc/scheduler/begin_frame_source.h"
-#include "cc/test/begin_frame_args_test.cc"
+#include "cc/test/begin_frame_args_test.h"
 #include "cc/test/fake_external_begin_frame_source.h"
 #include "services/ui/ws/server_window.h"
 #include "services/ui/ws/server_window_delegate.h"
 #include "services/ui/ws/test_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace ui {
 namespace ws {
 namespace test {
 
@@ skipping 322 matching lines @@
   InitWithSurfaceInfo();
 
   frame_generator()->OnWindowDamaged();
   IssueBeginFrame();
   EXPECT_EQ(2, NumberOfFramesReceived());
 }
 
 }  // namespace test
 }  // namespace ws
 }  // namespace ui