cc: Clean up OcclusionTracker template parameters.

cc/trees/layer_tree_host.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/trees/layer_tree_host.h"
 
 #include <algorithm>
 #include <stack>
 #include <string>
 
@@ skipping 971 matching lines @@
 
 void LayerTreeHost::PaintLayerContents(
     const RenderSurfaceLayerList& render_surface_layer_list,
     ResourceUpdateQueue* queue,
     bool* did_paint_content,
     bool* need_more_updates) {
   bool record_metrics_for_frame =
       settings_.show_overdraw_in_tracing &&
       base::debug::TraceLog::GetInstance() &&
       base::debug::TraceLog::GetInstance()->IsEnabled();
-  OcclusionTracker occlusion_tracker(
+  OcclusionTracker<Layer> occlusion_tracker(
       root_layer_->render_surface()->content_rect(), record_metrics_for_frame);
   occlusion_tracker.set_minimum_tracking_size(
       settings_.minimum_occlusion_tracking_size);
 
   PrioritizeTextures(render_surface_layer_list,
                      occlusion_tracker.overdraw_metrics());
 
   in_paint_layer_contents_ = true;
 
   // Iterates front-to-back to allow for testing occlusion and performing
@@ skipping 309 matching lines @@
   swap_promise_list_.push_back(swap_promise.Pass());
 }
 
 void LayerTreeHost::BreakSwapPromises(SwapPromise::DidNotSwapReason reason) {
   for (size_t i = 0; i < swap_promise_list_.size(); i++)
     swap_promise_list_[i]->DidNotSwap(reason);
   swap_promise_list_.clear();
 }
 
 }  // namespace cc