cc: Stop passing the occlusion explicitly to AppendQuads.

cc/trees/layer_tree_host_impl_unittest.cc

Index: cc/trees/layer_tree_host_impl_unittest.cc
diff --git a/cc/trees/layer_tree_host_impl_unittest.cc b/cc/trees/layer_tree_host_impl_unittest.cc
index dc519e5b5810b2d6f067b64dcc51c4a5db0d0107..aa46125a47237f50561d360cb28b0fd1435a288c 100644
--- a/cc/trees/layer_tree_host_impl_unittest.cc
+++ b/cc/trees/layer_tree_host_impl_unittest.cc
@@ -1929,11 +1929,9 @@ class DidDrawCheckLayer : public LayerImpl {
   }
 
   void AppendQuads(RenderPass* render_pass,
-                   const Occlusion& occlusion_in_content_space,
                    AppendQuadsData* append_quads_data) override {
     append_quads_called_ = true;
-    LayerImpl::AppendQuads(
-        render_pass, occlusion_in_content_space, append_quads_data);
+    LayerImpl::AppendQuads(render_pass, append_quads_data);
   }
 
   void DidDraw(ResourceProvider* provider) override {
@@ -2156,10 +2154,8 @@ class MissingTextureAnimatingLayer : public DidDrawCheckLayer {
   }
 
   void AppendQuads(RenderPass* render_pass,
-                   const Occlusion& occlusion_in_content_space,
                    AppendQuadsData* append_quads_data) override {
-    LayerImpl::AppendQuads(
-        render_pass, occlusion_in_content_space, append_quads_data);
+    LayerImpl::AppendQuads(render_pass, append_quads_data);
     if (had_incomplete_tile_)
       append_quads_data->num_incomplete_tiles++;
     if (tile_missing_)
@@ -4445,7 +4441,6 @@ class BlendStateCheckLayer : public LayerImpl {
   }
 
   void AppendQuads(RenderPass* render_pass,
-                   const Occlusion& occlusion_in_content_space,
                    AppendQuadsData* append_quads_data) override {
     quads_appended_ = true;
 
@@ -5170,7 +5165,6 @@ class FakeLayerWithQuads : public LayerImpl {
   }
 
   void AppendQuads(RenderPass* render_pass,
-                   const Occlusion& occlusion_in_content_space,
                    AppendQuadsData* append_quads_data) override {
     SharedQuadState* shared_quad_state =
         render_pass->CreateAndAppendSharedQuadState();