cc: Pass Occlusion instead of OcclusionTracker to LayerImpls

cc/layers/video_layer_impl.cc

Index: cc/layers/video_layer_impl.cc
diff --git a/cc/layers/video_layer_impl.cc b/cc/layers/video_layer_impl.cc
index 2edea947da42c07b0b00bb3db1ae402f44ab918e..5e3739728a2e8d5328236a1b7e097bbba6dc1b9c 100644
--- a/cc/layers/video_layer_impl.cc
+++ b/cc/layers/video_layer_impl.cc
@@ -14,7 +14,7 @@
 #include "cc/resources/resource_provider.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"
 #include "cc/trees/proxy.h"
 #include "media/base/video_frame.h"
 
@@ -129,10 +129,9 @@ bool VideoLayerImpl::WillDraw(DrawMode draw_mode,
   return true;
 }
 
-void VideoLayerImpl::AppendQuads(
-    RenderPass* render_pass,
-    const OcclusionTracker<LayerImpl>& occlusion_tracker,
-    AppendQuadsData* append_quads_data) {
+void VideoLayerImpl::AppendQuads(RenderPass* render_pass,
+                                 const Occlusion& occlusion_in_content_space,
+                                 AppendQuadsData* append_quads_data) {
   DCHECK(frame_.get());
 
   gfx::Transform transform = draw_transform();
@@ -175,9 +174,10 @@ void VideoLayerImpl::AppendQuads(
   gfx::Rect visible_rect = frame_->visible_rect();
   gfx::Size coded_size = frame_->coded_size();
 
+  Occlusion occlusion_in_video_space =
+      occlusion_in_content_space.GetOcclusionWithGivenDrawTransform(transform);
   gfx::Rect visible_quad_rect =
-      occlusion_tracker.GetCurrentOcclusionForLayer(transform)
-          .GetUnoccludedContentRect(quad_rect);
+      occlusion_in_video_space.GetUnoccludedContentRect(quad_rect);
   if (visible_quad_rect.IsEmpty())
     return;