cc: Pass Occlusion instead of OcclusionTracker to LayerImpls

cc/layers/texture_layer_impl.cc

Index: cc/layers/texture_layer_impl.cc
diff --git a/cc/layers/texture_layer_impl.cc b/cc/layers/texture_layer_impl.cc
index 206d8db1377eb59f01347eba0833bbca4eb0b4e1..bcde7cd49ecbac99591a787453cad6ea9a739cd2 100644
--- a/cc/layers/texture_layer_impl.cc
+++ b/cc/layers/texture_layer_impl.cc
@@ -13,7 +13,7 @@
 #include "cc/resources/scoped_resource.h"
 #include "cc/resources/single_release_callback_impl.h"
 #include "cc/trees/layer_tree_impl.h"
-#include "cc/trees/occlusion_tracker.h"
+#include "cc/trees/occlusion.h"
 
 namespace cc {
 
@@ -139,10 +139,9 @@ bool TextureLayerImpl::WillDraw(DrawMode draw_mode,
          LayerImpl::WillDraw(draw_mode, resource_provider);
 }
 
-void TextureLayerImpl::AppendQuads(
-    RenderPass* render_pass,
-    const OcclusionTracker<LayerImpl>& occlusion_tracker,
-    AppendQuadsData* append_quads_data) {
+void TextureLayerImpl::AppendQuads(RenderPass* render_pass,
+                                   const Occlusion& occlusion_in_content_space,
+                                   AppendQuadsData* append_quads_data) {
   DCHECK(external_texture_resource_ || valid_texture_copy_);
 
   SharedQuadState* shared_quad_state =
@@ -159,9 +158,7 @@ void TextureLayerImpl::AppendQuads(
   gfx::Rect quad_rect(content_bounds());
   gfx::Rect opaque_rect = opaque ? quad_rect : gfx::Rect();
   gfx::Rect visible_quad_rect =
-      occlusion_tracker.GetCurrentOcclusionForLayer(
-                            draw_properties().target_space_transform)
-          .GetUnoccludedContentRect(quad_rect);
+      occlusion_in_content_space.GetUnoccludedContentRect(quad_rect);
   if (visible_quad_rect.IsEmpty())
     return;