Do not clip inside OcclusionTracker.

cc/layers/tiled_layer.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.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/auto_reset.h"
@@ skipping 361 matching lines @@
         continue;
       // Did ResetUpdateState get skipped? Are we doing more than one occlusion
       // pass?
       DCHECK(!tile->occluded);
       gfx::Rect visible_tile_rect = gfx::IntersectRects(
           tiler_->tile_bounds(i, j), visible_content_rect());
       if (occlusion && occlusion->Occluded(render_target(),
                                            visible_tile_rect,
                                            draw_transform(),
                                            draw_transform_is_animating(),
-                                           is_clipped(),
-                                           clip_rect(),
                                            NULL)) {
         tile->occluded = true;
         occluded_tile_count++;
       } else {
         succeeded &= tile->managed_resource()->RequestLate();
       }
     }
   }
 
   if (!succeeded)
@@ skipping 500 matching lines @@
   gfx::Rect prepaint_rect = visible_content_rect();
   prepaint_rect.Inset(-tiler_->tile_size().width() * kPrepaintColumns,
                       -tiler_->tile_size().height() * kPrepaintRows);
   gfx::Rect content_rect(content_bounds());
   prepaint_rect.Intersect(content_rect);
 
   return prepaint_rect;
 }
 
 }  // namespace cc