cc: Clean up OcclusionTracker template parameters.

cc/layers/delegated_renderer_layer.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/layers/delegated_renderer_layer.h"
 
 #include "cc/layers/delegated_renderer_layer_impl.h"
 #include "cc/output/delegated_frame_data.h"
 #include "cc/quads/render_pass_draw_quad.h"
 #include "cc/trees/blocking_task_runner.h"
@@ skipping 95 matching lines @@
           RenderPassDrawQuad::MaterialCast(quad_list[j]);
       if (!render_pass_quad->filters.IsEmpty() ||
           !render_pass_quad->background_filters.IsEmpty())
         return true;
     }
   }
   return false;
 }
 
 bool DelegatedRendererLayer::Update(ResourceUpdateQueue* queue,
-                                    const OcclusionTracker* occlusion) {
+                                    const OcclusionTracker<Layer>* occlusion) {
   bool updated = Layer::Update(queue, occlusion);
   if (!should_collect_new_frame_)
     return updated;
 
   frame_data_ =
       frame_provider_->GetFrameDataAndRefResources(this, &frame_damage_);
   should_collect_new_frame_ = false;
 
   // If any quad has a filter operation or a blend mode other than normal,
   // then we need an offscreen context to draw this layer's content.
   if (FrameDataRequiresFilterContext(frame_data_))
     layer_tree_host()->set_needs_filter_context();
 
   SetNeedsPushProperties();
   return true;
 }
 
 }  // namespace cc