Reland of: cc: Add occlusion checker as a fixed view of occlusion tracker.

cc/resources/tile_manager_unittest.cc

Index: cc/resources/tile_manager_unittest.cc
diff --git a/cc/resources/tile_manager_unittest.cc b/cc/resources/tile_manager_unittest.cc
index b85c286fd37c1327608860958aea19cf21bb120a..7bdb0185b555ba97cd12ef9d78e5608a4de2bac2 100644
--- a/cc/resources/tile_manager_unittest.cc
+++ b/cc/resources/tile_manager_unittest.cc
@@ -642,37 +642,13 @@ TEST_F(TileManagerTilePriorityQueueTest, RasterTilePriorityQueue) {
   // Renew all of the tile priorities.
   gfx::Rect viewport(50, 50, 100, 100);
   pending_layer_->HighResTiling()->UpdateTilePriorities(
-      PENDING_TREE,
-      viewport,
-      1.0f,
-      1.0,
-      NULL,
-      pending_layer_->render_target(),
-      pending_layer_->draw_transform());
+      PENDING_TREE, viewport, 1.0f, 1.0, OcclusionChecker<LayerImpl>());
   pending_layer_->LowResTiling()->UpdateTilePriorities(
-      PENDING_TREE,
-      viewport,
-      1.0f,
-      1.0,
-      NULL,
-      pending_layer_->render_target(),
-      pending_layer_->draw_transform());
+      PENDING_TREE, viewport, 1.0f, 1.0, OcclusionChecker<LayerImpl>());
   active_layer_->HighResTiling()->UpdateTilePriorities(
-      ACTIVE_TREE,
-      viewport,
-      1.0f,
-      1.0,
-      NULL,
-      active_layer_->render_target(),
-      active_layer_->draw_transform());
+      ACTIVE_TREE, viewport, 1.0f, 1.0, OcclusionChecker<LayerImpl>());
   active_layer_->LowResTiling()->UpdateTilePriorities(
-      ACTIVE_TREE,
-      viewport,
-      1.0f,
-      1.0,
-      NULL,
-      active_layer_->render_target(),
-      active_layer_->draw_transform());
+      ACTIVE_TREE, viewport, 1.0f, 1.0, OcclusionChecker<LayerImpl>());
 
   // Populate all tiles directly from the tilings.
   all_tiles.clear();
@@ -841,37 +817,13 @@ TEST_F(TileManagerTilePriorityQueueTest, EvictionTilePriorityQueue) {
   // Renew all of the tile priorities.
   gfx::Rect viewport(50, 50, 100, 100);
   pending_layer_->HighResTiling()->UpdateTilePriorities(
-      PENDING_TREE,
-      viewport,
-      1.0f,
-      1.0,
-      NULL,
-      pending_layer_->render_target(),
-      pending_layer_->draw_transform());
+      PENDING_TREE, viewport, 1.0f, 1.0, OcclusionChecker<LayerImpl>());
   pending_layer_->LowResTiling()->UpdateTilePriorities(
-      PENDING_TREE,
-      viewport,
-      1.0f,
-      1.0,
-      NULL,
-      pending_layer_->render_target(),
-      pending_layer_->draw_transform());
+      PENDING_TREE, viewport, 1.0f, 1.0, OcclusionChecker<LayerImpl>());
   active_layer_->HighResTiling()->UpdateTilePriorities(
-      ACTIVE_TREE,
-      viewport,
-      1.0f,
-      1.0,
-      NULL,
-      active_layer_->render_target(),
-      active_layer_->draw_transform());
+      ACTIVE_TREE, viewport, 1.0f, 1.0, OcclusionChecker<LayerImpl>());
   active_layer_->LowResTiling()->UpdateTilePriorities(
-      ACTIVE_TREE,
-      viewport,
-      1.0f,
-      1.0,
-      NULL,
-      active_layer_->render_target(),
-      active_layer_->draw_transform());
+      ACTIVE_TREE, viewport, 1.0f, 1.0, OcclusionChecker<LayerImpl>());
 
   // Populate all tiles directly from the tilings.
   all_tiles.clear();
@@ -1016,37 +968,13 @@ TEST_F(TileManagerTilePriorityQueueTest,
   // Renew all of the tile priorities.
   gfx::Rect viewport(layer_bounds);
   pending_layer_->HighResTiling()->UpdateTilePriorities(
-      PENDING_TREE,
-      viewport,
-      1.0f,
-      1.0,
-      NULL,
-      pending_layer_->render_target(),
-      pending_layer_->draw_transform());
+      PENDING_TREE, viewport, 1.0f, 1.0, OcclusionChecker<LayerImpl>());
   pending_layer_->LowResTiling()->UpdateTilePriorities(
-      PENDING_TREE,
-      viewport,
-      1.0f,
-      1.0,
-      NULL,
-      pending_layer_->render_target(),
-      pending_layer_->draw_transform());
+      PENDING_TREE, viewport, 1.0f, 1.0, OcclusionChecker<LayerImpl>());
   pending_child_layer->HighResTiling()->UpdateTilePriorities(
-      PENDING_TREE,
-      viewport,
-      1.0f,
-      1.0,
-      NULL,
-      pending_child_layer->render_target(),
-      pending_child_layer->draw_transform());
+      PENDING_TREE, viewport, 1.0f, 1.0, OcclusionChecker<LayerImpl>());
   pending_child_layer->LowResTiling()->UpdateTilePriorities(
-      PENDING_TREE,
-      viewport,
-      1.0f,
-      1.0,
-      NULL,
-      pending_child_layer->render_target(),
-      pending_child_layer->draw_transform());
+      PENDING_TREE, viewport, 1.0f, 1.0, OcclusionChecker<LayerImpl>());
 
   // Populate all tiles directly from the tilings.
   all_tiles.clear();