cc: Clean up OcclusionTracker template parameters.

cc/layers/content_layer.cc

 // Copyright 2010 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/content_layer.h"
 
 #include "base/auto_reset.h"
 #include "base/metrics/histogram.h"
 #include "base/time/time.h"
 #include "cc/layers/content_layer_client.h"
@@ skipping 70 matching lines @@
 
 void ContentLayer::SetTexturePriorities(
     const PriorityCalculator& priority_calc) {
   // Update the tile data before creating all the layer's tiles.
   UpdateTileSizeAndTilingOption();
 
   TiledLayer::SetTexturePriorities(priority_calc);
 }
 
 bool ContentLayer::Update(ResourceUpdateQueue* queue,
-                          const OcclusionTracker* occlusion) {
+                          const OcclusionTracker<Layer>* occlusion) {
   {
     base::AutoReset<bool> ignore_set_needs_commit(&ignore_set_needs_commit_,
                                                   true);
 
     CreateUpdaterIfNeeded();
     UpdateCanUseLCDText();
   }
 
   bool updated = TiledLayer::Update(queue, occlusion);
   return updated;
@@ skipping 63 matching lines @@
   return picture;
 }
 
 void ContentLayer::OnOutputSurfaceCreated() {
   SetTextureFormat(
       layer_tree_host()->GetRendererCapabilities().best_texture_format);
   TiledLayer::OnOutputSurfaceCreated();
 }
 
 }  // namespace cc