Revert of Mus+Ash: propagate Surface ID to parents

services/ui/ws/test_change_tracker.cc

Index: services/ui/ws/test_change_tracker.cc
diff --git a/services/ui/ws/test_change_tracker.cc b/services/ui/ws/test_change_tracker.cc
index c5350be50a6e3534aeb692a22599a91a8bdf7004..cf9deb34f2fbe3dbf41619204a5fc24044e3b2d9 100644
--- a/services/ui/ws/test_change_tracker.cc
+++ b/services/ui/ws/test_change_tracker.cc
@@ -142,10 +142,6 @@
       return base::StringPrintf("OpacityChanged window_id=%s opacity=%.2f",
                                 WindowIdToString(change.window_id).c_str(),
                                 change.float_value);
-    case CHANGE_TYPE_SURFACE_CHANGED:
-      return base::StringPrintf("SurfaceCreated window_id=%s surface_id=%s",
-                                WindowIdToString(change.window_id).c_str(),
-                                change.surface_id.ToString().c_str());
   }
   return std::string();
 }
@@ -425,22 +421,6 @@
   AddChange(change);
 }
 
-void TestChangeTracker::OnWindowSurfaceChanged(
-    Id window_id,
-    const cc::SurfaceId& surface_id,
-    const cc::SurfaceSequence& surface_sequence,
-    const gfx::Size& frame_size,
-    float device_scale_factor) {
-  Change change;
-  change.type = CHANGE_TYPE_SURFACE_CHANGED;
-  change.window_id = window_id;
-  change.surface_id = surface_id;
-  change.surface_sequence = surface_sequence;
-  change.frame_size = frame_size;
-  change.device_scale_factor = device_scale_factor;
-  AddChange(change);
-}
-
 void TestChangeTracker::AddChange(const Change& change) {
   changes_.push_back(change);
   if (delegate_)