Remove parts of //cc we aren't using

cc/test/solid_color_content_layer_client.h

Index: cc/test/solid_color_content_layer_client.h
diff --git a/cc/test/solid_color_content_layer_client.h b/cc/test/solid_color_content_layer_client.h
deleted file mode 100644
index 1ab4c4d712f091a805b52472e660bd96b89d8ba9..0000000000000000000000000000000000000000
--- a/cc/test/solid_color_content_layer_client.h
+++ /dev/null
@@ -1,33 +0,0 @@
-// Copyright 2013 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.
-
-#ifndef CC_TEST_SOLID_COLOR_CONTENT_LAYER_CLIENT_H_
-#define CC_TEST_SOLID_COLOR_CONTENT_LAYER_CLIENT_H_
-
-#include "base/compiler_specific.h"
-#include "cc/layers/content_layer_client.h"
-#include "third_party/skia/include/core/SkColor.h"
-
-namespace cc {
-
-class SolidColorContentLayerClient : public ContentLayerClient {
- public:
-  explicit SolidColorContentLayerClient(SkColor color) : color_(color) {}
-
-  // ContentLayerClient implementation.
-  void PaintContents(SkCanvas* canvas,
-                     const gfx::Rect& rect,
-                     PaintingControlSetting painting_control) override;
-  scoped_refptr<DisplayItemList> PaintContentsToDisplayList(
-      const gfx::Rect& clip,
-      PaintingControlSetting painting_control) override;
-  bool FillsBoundsCompletely() const override;
-
- private:
-  SkColor color_;
-};
-
-}  // namespace cc
-
-#endif  // CC_TEST_SOLID_COLOR_CONTENT_LAYER_CLIENT_H_