Remove parts of //cc we aren't using

cc/blink/web_scrollbar_layer_impl.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 "cc/blink/web_scrollbar_layer_impl.h"
-
-#include "cc/blink/scrollbar_impl.h"
-#include "cc/blink/web_layer_impl.h"
-#include "cc/layers/layer.h"
-#include "cc/layers/painted_scrollbar_layer.h"
-#include "cc/layers/scrollbar_layer_interface.h"
-#include "cc/layers/solid_color_scrollbar_layer.h"
-
-using cc::PaintedScrollbarLayer;
-using cc::SolidColorScrollbarLayer;
-
-namespace {
-
-cc::ScrollbarOrientation ConvertOrientation(
-    blink::WebScrollbar::Orientation orientation) {
-  return orientation == blink::WebScrollbar::Horizontal ? cc::HORIZONTAL
-                                                        : cc::VERTICAL;
-}
-
-}  // namespace
-
-namespace cc_blink {
-
-WebScrollbarLayerImpl::WebScrollbarLayerImpl(
-    blink::WebScrollbar* scrollbar,
-    blink::WebScrollbarThemePainter painter,
-    blink::WebScrollbarThemeGeometry* geometry)
-    : layer_(new WebLayerImpl(PaintedScrollbarLayer::Create(
-          scoped_ptr<cc::Scrollbar>(
-              new ScrollbarImpl(make_scoped_ptr(scrollbar),
-                                painter,
-                                make_scoped_ptr(geometry))).Pass(),
-          0))) {
-}
-
-WebScrollbarLayerImpl::WebScrollbarLayerImpl(
-    blink::WebScrollbar::Orientation orientation,
-    int thumb_thickness,
-    int track_start,
-    bool is_left_side_vertical_scrollbar)
-    : layer_(new WebLayerImpl(
-          SolidColorScrollbarLayer::Create(ConvertOrientation(orientation),
-                                           thumb_thickness,
-                                           track_start,
-                                           is_left_side_vertical_scrollbar,
-                                           0))) {
-}
-
-WebScrollbarLayerImpl::~WebScrollbarLayerImpl() {
-}
-
-blink::WebLayer* WebScrollbarLayerImpl::layer() {
-  return layer_.get();
-}
-
-void WebScrollbarLayerImpl::setScrollLayer(blink::WebLayer* layer) {
-  cc::Layer* scroll_layer =
-      layer ? static_cast<WebLayerImpl*>(layer)->layer() : 0;
-  layer_->layer()->ToScrollbarLayer()->SetScrollLayer(
-      scroll_layer ? scroll_layer->id() : cc::Layer::INVALID_ID);
-}
-
-void WebScrollbarLayerImpl::setClipLayer(blink::WebLayer* layer) {
-  cc::Layer* clip_layer =
-      layer ? static_cast<WebLayerImpl*>(layer)->layer() : 0;
-  layer_->layer()->ToScrollbarLayer()->SetClipLayer(
-      clip_layer ? clip_layer->id() : cc::Layer::INVALID_ID);
-}
-
-}  // namespace cc_blink