cc: Simplify the logic for deciding to update tile priorities.

cc/trees/occlusion_tracker_unittest.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/trees/occlusion_tracker.h"
 
 #include "cc/animation/layer_animation_controller.h"
 #include "cc/base/math_util.h"
 #include "cc/debug/overdraw_metrics.h"
 #include "cc/layers/layer.h"
@@ skipping 302 matching lines @@
 
     DCHECK(!root->render_surface());
 
     LayerTreeHostCommon::CalculateDrawProperties(
         root,
         root->bounds(),
         1.f,
         1.f,
         dummy_max_texture_size,
         false,
-        &render_surface_layer_list_impl_,
-        false);
+        &render_surface_layer_list_impl_);
 
     layer_iterator_ = layer_iterator_begin_ =
         Types::TestLayerIterator::Begin(&render_surface_layer_list_impl_);
   }
 
   void CalcDrawEtc(TestContentLayer* root) {
     DCHECK(root == root_.get());
     int dummy_max_texture_size = 512;
 
     DCHECK(!root->render_surface());
@@ skipping 4200 matching lines @@
                        gfx::Rect(0, 0, 100, 100),
                        &has_occlusion_from_outside_target_surface));
     EXPECT_FALSE(has_occlusion_from_outside_target_surface);
   }
 };
 
 ALL_OCCLUSIONTRACKER_TEST(OcclusionTrackerTestLayerClipIsExternalOcclusion)
 
 }  // namespace
 }  // namespace cc