Remove parts of //cc we aren't using

cc/trees/layer_tree_host_pixeltest_synchronous.cc

-// Copyright 2014 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 "build/build_config.h"
-#include "cc/layers/content_layer_client.h"
-#include "cc/layers/picture_image_layer.h"
-#include "cc/layers/picture_layer.h"
-#include "cc/layers/solid_color_layer.h"
-#include "cc/test/fake_content_layer_client.h"
-#include "cc/test/layer_tree_pixel_test.h"
-#include "cc/test/pixel_comparator.h"
-
-#if !defined(OS_ANDROID)
-
-namespace cc {
-namespace {
-
-class LayerTreeHostSynchronousPixelTest : public LayerTreePixelTest {
- public:
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    LayerTreePixelTest::InitializeSettings(settings);
-    settings->single_thread_proxy_scheduler = false;
-  }
-
-  void BeginTest() override {
-    LayerTreePixelTest::BeginTest();
-    PostCompositeImmediatelyToMainThread();
-  }
-};
-
-TEST_F(LayerTreeHostSynchronousPixelTest, OneContentLayer) {
-  gfx::Size bounds(200, 200);
-
-  FakeContentLayerClient client;
-  SkPaint green_paint;
-  green_paint.setColor(SkColorSetARGB(255, 0, 255, 0));
-  client.add_draw_rect(gfx::RectF(bounds), green_paint);
-  scoped_refptr<PictureLayer> root = PictureLayer::Create(&client);
-  root->SetBounds(bounds);
-  root->SetIsDrawable(true);
-
-  RunSingleThreadedPixelTest(
-      PIXEL_TEST_GL, root, base::FilePath(FILE_PATH_LITERAL("green.png")));
-}
-
-}  // namespace
-}  // namespace cc
-
-#endif  // OS_ANDROID