cc: Move UnoccludedContentRect to Occlusion.

cc/layers/surface_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/layers/surface_layer_impl.h"
 
 #include "base/debug/trace_event_argument.h"
 #include "cc/debug/debug_colors.h"
 #include "cc/quads/surface_draw_quad.h"
 #include "cc/trees/occlusion_tracker.h"
@@ skipping 34 matching lines @@
       render_pass->CreateAndAppendSharedQuadState();
   PopulateSharedQuadState(shared_quad_state);
 
   AppendDebugBorderQuad(
       render_pass, content_bounds(), shared_quad_state, append_quads_data);
 
   if (surface_id_.is_null())
     return;
 
   gfx::Rect quad_rect(content_bounds());
-  gfx::Rect visible_quad_rect = occlusion_tracker.UnoccludedContentRect(
-      quad_rect, draw_properties().target_space_transform);
+  gfx::Rect visible_quad_rect =
+      occlusion_tracker.GetCurrentOcclusionForLayer(
+                            draw_properties().target_space_transform)
+          .GetUnoccludedContentRect(quad_rect);
   if (visible_quad_rect.IsEmpty())
     return;
   SurfaceDrawQuad* quad =
       render_pass->CreateAndAppendDrawQuad<SurfaceDrawQuad>();
   quad->SetNew(shared_quad_state, quad_rect, visible_quad_rect, surface_id_);
 }
 
 void SurfaceLayerImpl::GetDebugBorderProperties(SkColor* color,
                                                 float* width) const {
   *color = DebugColors::SurfaceLayerBorderColor();
   *width = DebugColors::SurfaceLayerBorderWidth(layer_tree_impl());
 }
 
 void SurfaceLayerImpl::AsValueInto(base::debug::TracedValue* dict) const {
   LayerImpl::AsValueInto(dict);
   dict->SetInteger("surface_id", surface_id_.id);
 }
 
 const char* SurfaceLayerImpl::LayerTypeAsString() const {
   return "cc::SurfaceLayerImpl";
 }
 
 }  // namespace cc