cc: Move UnoccludedContentRect to Occlusion.

cc/layers/tiled_layer_impl.cc

 // Copyright 2011 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/tiled_layer_impl.h"
 
 #include "base/basictypes.h"
 #include "base/debug/trace_event_argument.h"
 #include "base/strings/stringprintf.h"
 #include "cc/base/math_util.h"
@@ skipping 186 matching lines @@
                                   visible_tile_rect,
                                   border_color,
                                   border_width);
       }
     }
   }
 
   if (skips_draw_)
     return;
 
+  Occlusion occlusion =
+      occlusion_tracker.GetCurrentOcclusionForLayer(draw_transform());
   for (int j = top; j <= bottom; ++j) {
     for (int i = left; i <= right; ++i) {
       DrawableTile* tile = TileAt(i, j);
       gfx::Rect tile_rect = tiler_->tile_bounds(i, j);
       gfx::Rect display_rect = tile_rect;
       tile_rect.Intersect(content_rect);
 
       // Skip empty tiles.
       if (tile_rect.IsEmpty())
         continue;
 
       gfx::Rect visible_tile_rect =
-          occlusion_tracker.UnoccludedContentRect(tile_rect, draw_transform());
+          occlusion.GetUnoccludedContentRect(tile_rect);
       if (visible_tile_rect.IsEmpty())
         continue;
 
       if (!tile || !tile->resource_id()) {
         SkColor checker_color;
         if (ShowDebugBorders()) {
           checker_color =
               tile ? DebugColors::InvalidatedTileCheckerboardColor()
                    : DebugColors::EvictedTileCheckerboardColor();
         } else {
@@ skipping 74 matching lines @@
 
 void TiledLayerImpl::ReleaseResources() {
   tiler_->reset();
 }
 
 const char* TiledLayerImpl::LayerTypeAsString() const {
   return "cc::TiledLayerImpl";
 }
 
 }  // namespace cc