[cc] Make LayerImpls point at LayerTreeImpl instead of LTHI

cc/scrollbar_layer_impl.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/scrollbar_layer_impl.h"
 
 #include "cc/quad_sink.h"
 #include "cc/scrollbar_animation_controller.h"
 #include "cc/texture_draw_quad.h"
 #include "ui/gfx/rect_conversions.h"
 
 using WebKit::WebRect;
 using WebKit::WebScrollbar;
 
 namespace cc {
 
-scoped_ptr<ScrollbarLayerImpl> ScrollbarLayerImpl::create(LayerTreeHostImpl* hostImpl, int id)
+scoped_ptr<ScrollbarLayerImpl> ScrollbarLayerImpl::create(LayerTreeImpl* treeImpl, int id)
 {
-    return make_scoped_ptr(new ScrollbarLayerImpl(hostImpl, id));
+    return make_scoped_ptr(new ScrollbarLayerImpl(treeImpl, id));
 }
 
-ScrollbarLayerImpl::ScrollbarLayerImpl(LayerTreeHostImpl* hostImpl, int id)
-    : LayerImpl(hostImpl, id)
+ScrollbarLayerImpl::ScrollbarLayerImpl(LayerTreeImpl* treeImpl, int id)
+    : LayerImpl(treeImpl, id)
     , m_scrollbar(this)
     , m_backTrackResourceId(0)
     , m_foreTrackResourceId(0)
     , m_thumbResourceId(0)
     , m_scrollbarOverlayStyle(WebScrollbar::ScrollbarOverlayStyleDefault)
     , m_orientation(WebScrollbar::Horizontal)
     , m_controlSize(WebScrollbar::RegularScrollbar)
     , m_pressedPart(WebScrollbar::NoPart)
     , m_hoveredPart(WebScrollbar::NoPart)
     , m_isScrollableAreaActive(false)
@@ skipping 177 matching lines @@
 {
     return m_owner->m_isCustomScrollbar;
 }
 
 const char* ScrollbarLayerImpl::layerTypeAsString() const
 {
     return "ScrollbarLayer";
 }
 
 }  // namespace cc