Revert 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 fdba0501df68bdd7b5f4ce0eedc39dcc4a07399e..f229fcddcd1d1584b44696d89af63ce100e016e7 100644
--- a/cc/resources/tile_manager_unittest.cc
+++ b/cc/resources/tile_manager_unittest.cc
@@ -646,13 +646,37 @@
   // Renew all of the tile priorities.
   gfx::Rect viewport(50, 50, 100, 100);
   pending_layer_->HighResTiling()->UpdateTilePriorities(
-      PENDING_TREE, viewport, 1.0f, 1.0, Occlusion());
+      PENDING_TREE,
+      viewport,
+      1.0f,
+      1.0,
+      NULL,
+      pending_layer_->render_target(),
+      pending_layer_->draw_transform());
   pending_layer_->LowResTiling()->UpdateTilePriorities(
-      PENDING_TREE, viewport, 1.0f, 1.0, Occlusion());
+      PENDING_TREE,
+      viewport,
+      1.0f,
+      1.0,
+      NULL,
+      pending_layer_->render_target(),
+      pending_layer_->draw_transform());
   active_layer_->HighResTiling()->UpdateTilePriorities(
-      ACTIVE_TREE, viewport, 1.0f, 1.0, Occlusion());
+      ACTIVE_TREE,
+      viewport,
+      1.0f,
+      1.0,
+      NULL,
+      active_layer_->render_target(),
+      active_layer_->draw_transform());
   active_layer_->LowResTiling()->UpdateTilePriorities(
-      ACTIVE_TREE, viewport, 1.0f, 1.0, Occlusion());
+      ACTIVE_TREE,
+      viewport,
+      1.0f,
+      1.0,
+      NULL,
+      active_layer_->render_target(),
+      active_layer_->draw_transform());
 
   // Populate all tiles directly from the tilings.
   all_tiles.clear();
@@ -821,13 +845,37 @@
   // Renew all of the tile priorities.
   gfx::Rect viewport(50, 50, 100, 100);
   pending_layer_->HighResTiling()->UpdateTilePriorities(
-      PENDING_TREE, viewport, 1.0f, 1.0, Occlusion());
+      PENDING_TREE,
+      viewport,
+      1.0f,
+      1.0,
+      NULL,
+      pending_layer_->render_target(),
+      pending_layer_->draw_transform());
   pending_layer_->LowResTiling()->UpdateTilePriorities(
-      PENDING_TREE, viewport, 1.0f, 1.0, Occlusion());
+      PENDING_TREE,
+      viewport,
+      1.0f,
+      1.0,
+      NULL,
+      pending_layer_->render_target(),
+      pending_layer_->draw_transform());
   active_layer_->HighResTiling()->UpdateTilePriorities(
-      ACTIVE_TREE, viewport, 1.0f, 1.0, Occlusion());
+      ACTIVE_TREE,
+      viewport,
+      1.0f,
+      1.0,
+      NULL,
+      active_layer_->render_target(),
+      active_layer_->draw_transform());
   active_layer_->LowResTiling()->UpdateTilePriorities(
-      ACTIVE_TREE, viewport, 1.0f, 1.0, Occlusion());
+      ACTIVE_TREE,
+      viewport,
+      1.0f,
+      1.0,
+      NULL,
+      active_layer_->render_target(),
+      active_layer_->draw_transform());
 
   // Populate all tiles directly from the tilings.
   all_tiles.clear();
@@ -972,13 +1020,37 @@
   // Renew all of the tile priorities.
   gfx::Rect viewport(layer_bounds);
   pending_layer_->HighResTiling()->UpdateTilePriorities(
-      PENDING_TREE, viewport, 1.0f, 1.0, Occlusion());
+      PENDING_TREE,
+      viewport,
+      1.0f,
+      1.0,
+      NULL,
+      pending_layer_->render_target(),
+      pending_layer_->draw_transform());
   pending_layer_->LowResTiling()->UpdateTilePriorities(
-      PENDING_TREE, viewport, 1.0f, 1.0, Occlusion());
+      PENDING_TREE,
+      viewport,
+      1.0f,
+      1.0,
+      NULL,
+      pending_layer_->render_target(),
+      pending_layer_->draw_transform());
   pending_child_layer->HighResTiling()->UpdateTilePriorities(
-      PENDING_TREE, viewport, 1.0f, 1.0, Occlusion());
+      PENDING_TREE,
+      viewport,
+      1.0f,
+      1.0,
+      NULL,
+      pending_child_layer->render_target(),
+      pending_child_layer->draw_transform());
   pending_child_layer->LowResTiling()->UpdateTilePriorities(
-      PENDING_TREE, viewport, 1.0f, 1.0, Occlusion());
+      PENDING_TREE,
+      viewport,
+      1.0f,
+      1.0,
+      NULL,
+      pending_child_layer->render_target(),
+      pending_child_layer->draw_transform());
 
   // Populate all tiles directly from the tilings.
   all_tiles.clear();